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ACANTHOLIMON - (Plumbaginaceae) Acantholimons,
or prickly thrifts, form dense cushions of spiny sharp-tipped leaves and
attractive bloom stalks with lovely pink or white flowers followed by attractive
everlasting bracts. All are very heat and drought tolerant once established.
A. litwinowii - Tight spiny cushions of silver-gray under stalks of pale
pink flowers. Does not get as large as some of the other species. 4”(6”) x 6”
Sun $code A* A. venustum - Very attractive spiny silver-gray cushions and
short spikes of large, dark pink flowers with unusual yellow-brown calyx.
Outstanding! 6”(10”)
x 12” Sun $code A* (Photo)
AETHIONEMA – (Brassicaceae) A very useful group of Mediterranean plants
particularly well suited for sunny walls and crevices. Most have glaucous
foliage and racemes of pink flowers.
A. capitatum - Compact mounds of greenish-blue leaves that resemble a
dwarf conifer until smothered in spring with stems of light pink flowers. 2”(5”)
x 6” Sun $code
(Photo) AGASTACHE - (Lamiaceae) Wild hyssops with tall spikes of mint family
flowers, blooming from late summer until frost. All have intensely scented
foliage and blooms, attractive to hummingbirds and butterflies.
A. cana - Sweet bubblegum scented foliage and dark pink flowers, a
popular favorite. 30" x 12" Sun, Xeric to moderate water $code A
(Photo)
A. cana SONORAN SUNSET® - A compact, large-flowered selection,
that has proven to be a superior clone, blooming earlier and longer, with much
showier lavender-rose flowers than the species. A Plant Select® Introduction for
2002. 10”(15”) x 12” Sun, Part Shade $code A*
(Photo)
A. rupestris 'Sunset Hyssop' - Vibrant
pink-orange tubular flowers and linear leaves that smell like root beer. Blooms
even after several frosts. A Plant Select® Introduction for 1997. 30" x 12” Sun,
Xeric to moderate water $code A
(Photo)
ALLIUM senescens glaucum - (Amaryllidaceae) A very
nice dwarf form with swirling silver-gray foliage and short stems of light pink
flowers. 2”(5”) x 5” Sun, Part Shade $code A*
(Photo)
ALOINANTHUS - (Aizoaceae) This
newly created genus contains complex hybrids between species of
Aloinopsis
and Nananthus
and have been selected for their unique flower colors. They are not reliably
hardy here in zone 5 but will survive some winters in warm microclimates. They
are best planted among rocks with a southern exposure.
A. x ’High Noon’ - A generic hybrid between Aloinopsis
and Nananthus has smaller, more compact foliage and has proven to be more
reliably winter hardy. This selected clone has magnificent light yellow flowers
with an electric blue-pink wash at the end of each petal. 2” x 4” Sun,
Xeric $code A*
(Photo)
A. x ‘Morning Sky’ - Another selection of the previous
cross except this time the flowers open yellow and then age to dark orange with
a blue-pink wash at the tip of each petal. 2” x 4” Sun, Xeric
$code A*
(Photo)
A. x ‘Last Light’ - Yet another selection of Aloinopsis
x Nananthus with flowers that are orange with an electric blue-pink wash in the
center of the flower and at the tip of each petal. 2” x 4” Sun,
Xeric $code A*
(Photo)
A. x ‘Opera Mauve’ - This selection sports attractive opera
mauve (yes this is a real color) flowers that do not change color as they age. A
very good performer! 2” x 4” Sun $code A*
(Photo)
A. x ’Sunscapes Pink’ - A selection with glowing, deep pink
flowers. 2” x 4” Sun $code A*
(Photo)
A. x ’Yellow Eye’ - Shades of electric blue
and orange with a light yellow center. 2” x 4” Sun, Xeric $code A*
(Photo)
ALOINOPSIS - (Aizoaceae) An outstanding group of succulent plants from
South Africa. All form caespitose clumps of thick succulent leaves and produce
spectacular floral displays from yellow to various shades of red and magenta.
The rosettes of leaves sit atop a large carrot-like root that must be protected
from excessive moisture. This can often be accomplished by planting in rock
crevices or walls.
A. spathulata - A gem from the rich alpine flora of South Africa! Dense
mounds of spathulate, succulent blue-green leaves covered in spring with large
magenta flowers. As with all ‘ice plants’, provide good drainage and decrease
watering in fall to induce dormancy for winter. 2” x 4” Sun, Xeric $code A*
(Photo)
A. x ‘Thai Dyed’ - (Aizoaceae) A spectacular hybrid
created by a chance cross pollination of Titanopsis fulleri and likely
Aloinopsis spathulata in the garden of David Salmon from High Country
Gardens. Hard to believe such a drastic color break could occur in only one
generation, but that seems to be the case. Enjoy! 2" x 4" Sun, Xeric $code
A* (Photo)
ALYSSUM - (Caryophyllaceae) A large group of cruciferous plants
native to Europe and Asia with the largest number in Turkey. Generally of
easy culture with attractive gray-pubescent foliage and magnificent displays of
yellow flowers.
A. stribrnyi - NEW Dense mounds of silver foliage and airy sprays
of light yellow flowers in spring. Very floriferous and may re-bloom in
the fall. 1"(5") x 6" Sun $code A
AMSONIA jonesii - (Apocynaceae) A very showy and durable plant
with numerous upright stems of lanceolate, soft green leaves with heads of long-tubed
sky-blue flowers in spring. Drought tolerant. Duchesne Co., UT 24” x 15” Sun,
Xeric $code A (Photo)
ANDRYALA agardhii - (Asteraceae) Ornamental silver rosettes and yellow
flowers make an outstanding addition to a well drained rock garden. An
outstanding foliage plant. Spain 3”(5”) x 6” Sun $code A
(Photo)
ANTENNARIA hilbersonii - (Asteraceae) An exciting Asian
species that looks much like one of the choice compact Helichrysums with tight,
silver tomentose foliage and pussy-toe flowers on short stems. Should prove to
be an excellent trough subject. .5”(1”) x 6” Sun, Part Shade $code A*
(Photo)
ARCTOTIS adpressa - (Asteraceae) A wonderful new addition from the high
mountains of South Africa! Rosettes of succulent, iridescent silver
foliage are adorned in early spring with 3” white daisies with peach and maroon
reverses. This gem thrives in ordinary garden conditions and forms spectacular
12” to 15” mats. A beautiful foliage plant when not in flower. Very hardy! 2”(5”) x 12” Sun, Not too hot and dry $code A*
(Photo)
ARENARIA
- (Caryophyllaceae) Often referred to as ’sandworts’, this Genus contains
numerous dwarf, drought tolerant species that form attractive buns or mats of
spiny congested foliage. Most are small and are best suited to troughs or small
rock gardens.
A. hookeri v. desertorum - Forms extremely tight low buns of very small
green needle foliage. The buns are covered with short stems of small white
flowers in early summer. Well suited for trough culture. 1”(2") x 4” Sun,
Trough $code A*
(Photo)
ASTER - (Asteraceae) A large group of mostly perennial
herbs and shrubs native to North and South America, Europe, Asia and Africa.
Most are easily grown, with large species very useful in the perennial border
and small more delicate species better suited to the small native or rock
garden.
A. ericoides 'Snow Flurry' - NEW A robust drought tolerant
ground cover of bright green stems with small leaves. In late summer the
plants are completely covered with small white flowers with yellow centers.
In spring, cut back the old flowering stems to the newly emerging rosettes.
1"(3") x 12" Sun, Part Shade $code A
(Photo)
ASTRAGALUS - (Fabaceae) The milkvetch genus has some of the showiest
flowers in the pea family, combined with attractive foliage cushions and
interesting seed pods. Most are very tough and can withstand poor soil, full sun
and xeric conditions.A. chloodes - This unique Utah native has the longest,
narrowest leaves in the genus. The clumps resemble very stiff, silvery-green
grass with several loose racemes of magenta flowers produced in late spring. 6”
x 6” Sun, Xeric $code A*
A. angustifolius - An outstanding species that forms impressive compact
mounds of silver-gray pinnate foliage covered with white flowers in late spring.
Romania 6” x 12” Sun, Xeric $code A*
(Photo)
A. aretioides –
RENEW Dense mounds of small
woolly silver leaves and caespitose vivid pink-violet flowers. A very choice
Wyoming native. 1” x 6” Sun, Xeric $code A*
A. austiniae - NEW Lax cushions of short, prostrate stems of
silvery pubescent foliage that develop into 4"-8" mats. Heads of white
flowers with reddish-purple veining mature into white woolly seed pods.
Nevada Co., CA 2" x 8" Sun, Alpine $code A*
A. detritalis - One of the best! Attractive tufts of linear silver leaves
topped with racemes of bright magenta flowers. A native from the prairies and
foothills of western Utah. 4”(6”) x 4” Sun, Xeric $code A
(Photo)
A. iodanthus - NEW Green pinnate foliage and heads of dark
violet flowers with a white patch on the banner. Eureka Co. NV. Sun,
Xeric $code A*
A. jejunus - NEW Upright tufts of pinnate foliage with small
purplish flowers followed by brightly-mottled seed pods. Eureka Co., WY
2" x 2" Sun, Xeric $code A*
A. megacarpus - Erect dark-green pinnate foliage with small pink
flowers that seem to develop overnight into giant red-mottled seed pods (up to
4”). One of the most interesting Astragali. 4” x 6” Sun,Xeric $code A*
(Photo)
A. mollissimus v. thompsonii - Very attractive clumps of long silver
pinnate foliage and short stalks of purple flowers. The flowers are followed by
white fuzzy seed pods. San Juan Co., UT 3”(7”) x 9” Sun, Xeric
$code A
(Photo)
A. species ‘San Felipe’ - A gorgeous species found growing near
the San Felipe Indian Pueblo south of Santa Fe, NM. The large pads of
attractive silver foliage are covered with large dark pink flowers in early
spring. Outstanding! 3” x 10” Sun, Xeric $code A (Photo)
A. utahensis - A very attractive species with light-gray pubescent
leaves and large luminescent pink flowers. 2” x 6” Sun, Xeric $code A*
(Photo)
AUBRETIA gracilis - (Cruciferae) An excellent species
that is both compact and free-flowering. In spring the mat is covered with
blue-purple flowers and the foliage remains as an attractive foliage specimen
after flowering. Choice! Greece, Albania 4” x 18” Sun, Part Shade $code A*
(Photo)
BERGERANTHUS - (Aizoaceae) A small genus of
succulent plants native to South Africa. A number of the species grow at
high elevation and have proven to be quite cold hardy.
B. albomarginatus - Rosettes of medium green foliage
curved inward toward the tip. Yellow flowers opening in the late
afternoon. 2" x 5" Sun, Xeric
$code A
B. artus - Medium green foliage and nice scented yellow flowers
opening in the evening. 2" x 5" Sun, Xeric $code A
B. jamesii - A very hardy South African succulent with attractive
dark green clumps of three-sided leaves and large yellow flowers with many
narrow petals.
2” x 5” Sun, Xeric $code A
(Photo)
BUKINICZIA cabulica - (Plumbaginaceae) Blue-green
rosettes with unusual mottled leaves. Outstanding foliage plant with pink
flowers the second year. Reseeds nicely. 1"(6") x 6" Sun, Biennial $code A
(Photo)
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CALANDRINIA - (Portulacaceae) A large genus of annual
and perennial herbs mostly native to western North and South America. The stems
and/or foliage are succulent and the very brightly colored short-lived flowers
are produce in continuing succession over the flowering season.
C. umbellata - From Peru, stunning neon-magenta flowers on linear,
slightly hairy foliage. 3"(6") x 6" Sun $code A
CALYLOPHUS serrulatus - (Onagraceae) From the Evening Primrose family,
this day bloomer forms dense tufts of gray-green foliage on a miniature shrublet
with yellow tubular flowers all summer. 6" x 8" Sun, Xeric $code A (Photo)
CAMPANULA - (Campanulaceae) The bellflowers are numerous and varied,
providing species for a variety of settings and exposures. Some of the species
are particularly useful as wall plants and will flourish in the tiniest crevice.
They are generally easy to cultivate and will provide good color throughout the
growing season.
C. choruhensis - An outstanding dwarf Turkish Campanula, forming small
clumps of green topped in summer with pink-tinged flower buds that open into
huge white starfish flowers. Outstanding! 2”(3”) x 4” Sun $code A*
(Photo)
C. sarmatica - NEW A nice dwarf species with
clusters of silvery-blue flowers over rosettes of pointed hairy foliage.
Easy to grow but not weedy. W. Caucases, Russia 2"(6") x 9"
Sun, Part Shade $code A
C. sartorii - NEW A biennial bellflower from Greece that forms
rosettes with 4"-5" stems of white flowers. 2" x 6" Sun, Part
Shade $code A
C. topaliana - A ground hugging mat of pubescent gray-green leaves
studded with light blue flowers from early summer to frost. Makes a spectacular
wall plant with stems clasping the rocks like a giant spider. 2” x 8” Sun,
Crevice/Wall $code A
(Photo)
C. trogerae - One of the best! Nice clumps of gray-green leaves and
beautiful 2"-3” white flowers with exerted pistils. Turkey 3”(4”) x 6” Sun, Part Shade
$code A* (Photo)
CASTILLEJA - (Scrophulariaceae) A large group of perennial herbs found
mostly in North and South America. Most species seem to form a parasitic
relationship with other plants and, therefore, they should be planted with other
natives. Native grasses, Penstemon and Artemisia have proven successful.
C. sessiliflora - Olive-green foliage with spikes of attractive
tricolor flowers of pink, cream and green. This dry prairie ‘Paint Brush’ does
well in pot culture and seems to be less dependent on host plants. Unusual.
5"(8") x 8" Sun, Xeric, Trough $code A*
(Photo)
CERCOCARPUS - (Rosaceae) The ‘Mountain Mahoganies’ are evergreen shrubs
that grow throughout the Rocky Mountain West, often found on open, rocky slopes.
In summer, insignificant flowers appear, followed by feathery tailed seeds. Very
hardy and useful structure plants for the garden.
C. intricatus - Dense erect evergreen shrub with small dark-green linear
leaves and contrasting gray stems. Makes a very striking vertical structure
element in the xeric garden. A Plant Select®
Recommendation for 2009. 8’ x 4’ Sun, Xeric $code A
(Photo)
CLEMATIS - (Ranunculaceae) This large group of vines and
shrubby plants is found growing in temperate regions throughout the world and
has been frequently hybridized to produce a variety of brightly colored
cultivars. The shrubby non-vining species and cultivars are good choices
for the rockery or rock garden.
C. fruticosa 'Mongolian Gold' - NEW This unique species is an erect, woody shrub
that is covered with yellow flowers in summer followed with attractive seed
heads in late summer and fall. Originally collected by the Great Plants™
group in Northern Inner Mongolia. A 1999 Great Plants® selection.
36" x 36in. Sun $ code A*
(Photo)
CONVOLVULUS - (Convolvulaceae) An interesting genus, containing some of the most coveted as well as some of the
most hated plants (bindweed) in the garden. Fortunately, we offer only the
former - tight mats of non-invasive foliage and attractive flowers.
C. assyricus - Tight mats of gray-green pubescent foliage and sessile
light pink flowers. Outstanding! Turkey 2” x 8” Sun, Xeric $code A*
(Photo)
C. compactus - Congested mats of shimmering silver foliage and sessile
white flowers. Superb! Turkey 2” x 8” Sun $code A*
(Photo)
DAPHNE - (Thymelaceae) A genus of evergreen flowering shrubs that
contains some of the most desirable plants for the rock garden. They are
notoriously difficult to produce and do not thrive in pots. Small plants
transplant more reliably, so purchasing more expensive large plants is usually a
mistake. Always plant in well drained soil in full or part shade. Once
established, they are quite drought tolerant so do not over water. All of our
plants have been grown using the biological fungicide Rootshield to help protect
the roots from fungal attack.
D. cneorum f. verlotii x arbuscula - One of the most reliable dwarf
cultivars forming dense mounds of dark green foliage and deep pink-purple
flowers produced in spring and again in fall. A real winner! 6” x 12” Sun, Part
Shade $code A**
(Photo)
D. juliae - A fantastic species forming mounds of
numerous thin stems of dark green foliage and covered in spring with strongly
scented, bright pink flowers. Russia 6” x 12” Sun, Part Shade $code A**
(Photo)
D. x napolitana 'Stacek' - NEW Originally from Romania, this is one of the
most attractive dwarf variegated cultivars. 'Stacek' is one of the
earliest of the spring-flowering varieties with rosy-purple buds opening into
fragrant lilac-pink flowers. Flowering continues on new growth from July
until frost. 8" x 12" Sun, Part Shade $code A**.
D. x susannae 'Anton Fahndrich' (formerly sold as D. sericea v.
compacta) - This outstanding compact selection of the forms dense
mounds of dark evergreen foliage covered with fragrant lavender-pink flowers in
spring or early summer. 8” x 12” Sun, Part
Shade $code A** (Photo)
D. x susannae 'Cheriton' - NEW Similar to 'Lawrence Crocker' but with darker
rosy purple flowers. The initial flush of flowers is in early spring but
flowering continues on new growth throughout the summer. 8" x 12"
Sun, Part Shade $code A**
D. x susannae 'Lawrence Crocker' - One of the best and easiest of the small
hybrids. A cross between D. arbuscula and D. collina forming a dense mound of
evergreen foliage covered in spring with fragrant lavender-pink flowers.
Sporadic flowering continues throughout summer into fall. 8” x 12” Sun, Part
Shade $code A**
(Photo)
D. x transatlantica 'Summer Ice' - NEW A variegated sport of 'Jims Pride'
with mid-green leaves with narrow cream margins. The extremely fragrant
white flowers are produced from spring to fall. 30" x 24" Sun, Part
Shade $code A** (Photo)
Degenia velebitica -
(Brassicaceae )
NEW
Tufts of linear silver leaves with short stems of large bright yellow flowers
followed by inflated seed pods. A monotypic genus endemic to the Velebit
Mountains of Croatia; the image of this species can be found on the reverse of the Croatian 50 lipa coin. 2"(3") x 4" Sun, Part Shade $code A*
(Photo)
DELOSPERMA - (Aizoaceae) A large genus of succulent plants native to
South Africa. Most are not winter-hardy but there are high altitude species that
will thrive in cold climates. A number of these species have been introduced
into cultivation by our good friend Panayoti Kelaidis. They all have beautiful
flowers and interesting, succulent foliage.
D. ashtonii 'Blut' - A superb new ice plant
originally discovered by Nurseryman Kelly Grummons, owner of Timberline Nursery
in Arvada, CO. The mat of deep green evergreen foliage is covered with
magenta-red flowers in spring and sporadically throughout the season. 2" x
36" Sun $code A
(Photo)
D. basuticum 'Gold Nugget' - Previously listed as D. congestum, this plant forms tight
mats of light green leaves covered with sessile yellow flowers in spring. Good
trough plant and one of the hardiest.. 1” x 4” Sun, Alpine $code A
(Photo)
D. sp. 'Beaufort West' - Another outstanding addition to the ever growing
list of winter hardy ice plants! Collected in the Great Karoo of South Africa
near the town of Beaufort West, this little gem produces tight mounds of dark
green succulent foliage adorned in spring and summer with sessile, bright pink
flowers. Super!
1.5” x 5” Sun $code A
(Photo)
D. sp. ‘Carlile Pink’ - A cute little species with light green
succulent foliage and delicate light pink flowers with dark pink centers.
This plant appeared in the garden and it’s origin is unknown. Very hardy. 1” x
5” Sun $code A
(Photo)
D. cooperi ‘Select Dwarf’ - A smaller version of the common D. cooperi but this one seems to be one zone hardier. A beautiful plant which you
can now enjoy in a smaller garden. 1”(2”) x 8” Sun $code A
(Photo)
D. dyeri RED MOUNTAIN® - A new hardy iceplant from the mountains of South Africa. The
congested mats of dark green foliage are studded with spectacular dark orange-red
flowers from spring to fall. More drought and heat tolerant than many of the
alpine iceplants. A Plant Select®
Introduction for 2007. 1” x 8” Sun $code A* (Photo)
D. LAVENDER ICE™ - We are proud to offer this exciting new ice
plant selection that was discovered by our good friends at Perennial Favorites
Nursery. Similar in foliage and habit to Table Mountain® but with stunning
lavender flowers. To date it has demonstrated excellent cold and drought
tolerance. A real winner! A Plant Select®
Introduction for 2009. 2” x 36” Sun $code A*
(Photo)
D. sp. ‘Lesotho Pink’ - An exciting new introduction first
offered by High Country Gardens. Forms very compact mats of dark green evergreen
foliage covered from early to mid spring with large, deep pink flowers.
Excellent cold hardiness. Lesotho 1” x 18” Sun, Part Shade $code A*
(Photo)
D. MESA VERDE® - This iridescent, salmon-pink-flowered sport
appeared among plants of a dwarf, alpine form of Delosperma cooperi at Denver
Botanic Gardens in 1997. It is vigorous, compact and floriferous. Perennial. A
Plant Select®Introduction for 2002. 2” x 12” Sun, Part Shade $code A*
(Photo)
D. TABLE MOUNTAIN® - This ice plant is destined to become
one of the greats! An outstanding ground cover with dark green wedge-shaped
leaves that are covered throughout the growing season with lustrous, fuchsia
flowers. Hardier than D. cooperi, the leaves remain turgid and green, often
tinged with purple, throughout the winter. Don’t be without this one! A Plant
Select® Introduction for 2002. 2” x 36” Sun $code A*
(Photo)
D. sphalmanthoides - Small mats of congested blue green cylindrical
leaves covered in spring with sessile fuchsia flowers that seem to glow. 1" x 4" Sun
$code A
(Photo)
D. sutherlandii - An outstanding species with
succulent dark green foliage and large magenta flowers. This species grows
from a central root and does not spread into a mat. Natal, Transvaal, South
Africa 3” x 4” Sun $code A
(Photo)
DIANTHUS - (Caryophyllaceae) An indispensable group of plants that are
easily grown and provide outstanding color and texture in the garden. There are
all sizes and shapes but we are particularly fond of the smaller bun-forming
species that fit well into the smaller rock garden or trough. No garden should
be without them!
D. alpinus - One of the best , forming tidy mats of shiny green
foliage and covered in late spring with large flowers in shades of white, pink and red.
E. Alps 2"x 6" Sun $code A
(Photo)
D. arpadianus - Very compact cushions of gray-green foliage and
light pink flowers on 1” stems. One of the best! Turkey 3”(4”) x 4” Sun $code A*
(Photo)
D. x ’Sunscapes Pink ’ - After additional study and
observation, we have come to the conclusion that what we have been offering as
D. freynii is more likely a D. gratianopolitanus hybrid. Although the name may have changed, the plant has not and it remains a
stunner - mats of gray-green foliage and nice aromatic pink flowers in
profusion. Easy and attractive. 3”(5”) x 12” Sun $code A
(Photo)
DIASCIA integerrima CORAL CANYON® - (Scorphulariaceae) This heat tolerant
introduction from the East Cape Drakensburg Range of South Africa has a wide
tolerance of soil and exposure. A cloud of pink, oval flowers from late spring
to autumn frost. By far the toughest performer in the novel genus of
everblooming wildflowers. A Plant Select® Introduction for 2000
6”(12”) x 12” Sun, Part Shade $code A
(Photo)
DIGITALIS – (Scrophulariaceae) A group of summer flowering perennial and
biennial herbs native to Europe and northwest Africa to central Asia. Most have
large penstemon-like flowers and are easily grown.
D. mariane - One of the best Digitalis for the rock garden! Nearly
prostrate dark green rosettes arise from a perennial crown and produce strong
12” stems of glorious, large, reddish-purple flowers. Similar to D. purpurea but
not as fussy. 3”(12”) x 10” Sun, Part Shade $code A
(Photo)
D. obscura SUNSET® - A dwarf selection of this subshrub, with evergreen,
willow-like foliage set off by burnt sienna-colored trumpet shaped flowers.
Attractive in and out of flower. A Plant Select® Recommendation for 2004. 10”(14”) x 15” Sun, Part Shade $code A* (Photo)
DRABA - (Brassicaceae) A large group of bun forming plants with yellow or
white crucifer flowers. With a few exceptions, all are easy to grow. They are
among the earliest to flower, marking the beginning of early spring activity in
the garden.
D. atlantica - NEW Cushions of hairy green rosettes with globose
clusters of nice yellow flowers on 2" stems. High Atlas, Morocco
2"(4") x 4" Sun, Part Shade $code A
D. densifolia - Compact cushions of small, hairy,
gray rosettes adorned in early spring with dense clusters of yellow flowers.
Wasatch Plateau, San Pete Co., UT 1”(3”) x 4” Sun, Alpine $code A
D. polytricha - Compact mounds of hairy, gray-green
foliage adorned with short stems of bright yellow flowers in early spring.
2” x 4” Sun $code A
D. rigida -
One of the tightest buns in the genus
with dark green incurved leaves and short stems of bright yellow flowers.
Caucasus 2”(4”) x 4” Sun, Part Shade $code A
ECHINOCEREUS - (Cactaceae) A large group of heavily-spined
cacti often called ‘Hedgehog Cactus’. Within this genus are many of the most
winter hardy cacti. Most have extremely large showy flowers that appear in early
summer and all are easily grown if given full sun and well drained soil.
E. fendleri - NEW A new collection from a population of plants in Fremont Co.,
CO. Robust 8" to 10" stems with variable spine colors and some partial
hooks. Large purple flowers. 8" x 3" Sun, Xeric $code A*
E. reichenbachii v. baileyi - NEW Tall, cylindric stems with variable
combinations of red, orange, yellow, white or pink spines. Nice large
magenta flowers. 6" x 3" Sun, Xeric $code A*
E. triglochidiatus - NEW Robust green stems with 5-8 ribs armed
with heavy tan and gray- brown spines. The flowers are a magnificent
scarlet-red with green stigmas. This is likely variety gonacanthus
and will form a mound of branching stems 12"-18" in diameter in time. 5" x
3" Sun, Xeric $code A*
(Photo)
E. viridiflorus - Native to the prairies and foothills
of southern Colorado, this small clumping cactus is as hardy as they get. Appressed white and red spines and aromatic greenish-yellow flowers in spring.
Very hardy 2” x 2” Sun, Xeric $code A*
E. x lloydii - NEW A naturally occurring hybrid between E.
coccineus and E. dasyacanthus with stout, clumping green stems with
6-8 ribs armed with heavy tan spines. The large attractive flowers are
generally shades of orange. A very reliable garden plant. 6" x 3"
Sun, Xeric $code A*
(Photo)
ECHIUM amoenum 'Red Feathers'- (Boraginaceae) A compact, columnar borage from the Caucasus
that looks for all purposes like a spring blooming Liatris that’s gone rusty.
The dark reddish-brown flowers are attractive and the plant will re-bloom if
deadheaded. A Plant Select® Recommendation
for 2010. 4”(10” ) x 4” Sun $code A*
(Photo)
EDRAIANTHUS - (Campanulaceae) A very useful and attractive group of Mediterranean
plants with grass-like foliage and clusters of up-facing bell flowers. They
thrive in sunny locations and are particularly effective in walls and crevices.
E. pumilio - Mounds of slender, rigid, blue-green leaves covered in spring with
upward facing blue bell flowers. Very showy and particularly well suited for
walls and crevices. 2" x 6” Sun, Part Shade $code A
(Photo)
EPITHELANTHA micromeris - (Cactaceae) A very choice cactus with tiny appressed
white spines covering the plant. Small salmon flowers emerge from the top of the
plant in spring, followed by very decorative long, bright red fruits. From the
northernmost population in New Mexico. Cannot reliably be wintered outside in
Zone 5. 2” x 1” Sun, Xeric $code A*
ERIGERON - (Asteracea) A vast and variable race of composites many of which make
good garden subjects. Most are easy to grow and can be used in a variety of
garden situations from the open garden to walls and crevices.
E. chrysopsidis v. brevifolius - Compact
tufts of tomentose, dark green linear foliage and nice yellow flowers on 1”
stems. Flowers from spring to fall and performs well in troughs. Wallowa Mtns.,
Wallowa Co., OR 2”(3”) x 4” Sun, Part Shade, Trough $code A
(Photo)
E. compactus v. consimilis - Dense pulvinate cushions of short, linear,
gray-green leaves and large white flowers that age to pale lavender. A choice
Great Basin native requiring excellent drainage and protection from excess
winter moisture. Outstanding! 2”(4”) x 6” Sun, Xeric $code A
(Photo)
E. compositus ‘Red Desert’ - This very dwarf form was found growing in rock
crevices near Baggs, Wyoming. Very condensed foliage and white flowers on short
stems. Great for walls and crevices! 1”(2”) x 6” Sun $code A
(Photo)
E. scopulinis - Dense mats of small shiny dark green leaves and cute little
white flowers on 1/2" stems in spring. Good for troughs and between rocks. 1"(1.5") x 12" Sun, Part Shade $code A
(Photo)
ERIOGONUM - (Polygonaceae) The ‘buckwheats’or ‘sulphur flowers’ are a dominant
presence on the prairies and mountain screes of the West. They come in an
amazing array of forms and colors, from tiny mat formers and mini-shrubs, to
fantastic mounds of silver tomentose leaves that erupt into dense domes of
‘chicken wire’ covered with tiny flowers.
E. cespitosum -
RENEW
A highly desirable species forming tight
caespitose mats of gray-green tomentose leaves and short-stemmed pom-poms of
white and pink flowers. Requires xeric treatment. 1” x 5” Sun, Xeric $code
A* (Photo)
E.
douglasii - RENEW Compact low
mounds of small linear silver foliage with cherry red flower buds that open to
pale yellow pompoms. Cascade Range, Yakima CO., WA 1” (6”) x 4” Sun, Xeric
$code A*
E. ericifolium v. pulchrum - A perfect tiny
shrub with clouds of pure white, ivory or pink powder puffs in late summer and
autumn. 5”(8”) x 8” Sun, Xeric
$code A*
(Photo)
E. kennedyi v.
purpusii - RENEW
Dense silvery white
cushions of tiny round leaves covered with white wool. The 1” poms of white
flowers rise above the mats on short stems. This species may have the whitest
foliage in the genus. Mono Co., CA 1”(3”) x 6” Sun, Xeric $code A*
E. saxatile - Small spreading cushions of relatively large,
white-felted, spoon shaped leaves with branching flowering stems of pale yellow
umbels that quickly age to copper and bronze. Southern Sierra Nevada, Inyo Co.,
CA 4” x 8” Sun, Xeric $code A*
E. umbellatum v. aureum KANNAH CREEK®
- An excellent garden plant that seems to be more
moisture tolerant than most. The spreading green foliage changes to vivid
purple-red in winter and masses of yellow flowers appear from May to July,
turning orange as they age. Plant Select®
Introduction for 2007. W. United States 8”(12”) x 20”
Sun $code A*
ESCOBARIA - (Cactaceae) A North American genus of solitary
to clump-forming, globular cacti with a number of reliably cold-hardy
species. The apical flowers appear in early summer.
E. dasyacantha v. nova - NEW Single stems with red-tipped, white spines
and sunset-pink to olive-green flowers. Green to flesh-pink fruits. 4" x
2" Sun, Xeric $code A*
E. navahoensis v. nova - NEW Dark green stems with only a few large
tubercles tipped with a small ring of very short white radial spines. The
flowers are a creamy yellow followed by attractive red seed pods. 1" x 3"
Sun, Xeric $code A*
E. orcuttii v. koenigii - A very attractive
clump-forming species covered completely with short white spines. Small
salmon-pink flowers in early summer. Very hardy. 4" x 6" Sun,
Xeric $code A*
(Photo)
E. sneedii v. leeii - Small clumps with short white
spines and small salmon-pink flowers in early summer. Very hardy and one
of the best species for trough culture. 2" x 4" Sun, Xeric, Trough
$code A*
(Photo)
E. varicolor - NEW Light green stems, generally solitary, with numerous
delicate straw colored radials and one light reddish-brown central.
Flowers are white to very light pink followed by attractive dark red fruits.
5" x 2" Sun, Xeric $code A*
E. vivipara - Globes of interwoven brown and white spines
with dark brown tips. Attractive bright pink flowers. Pueblo Co., CO 3” x 3”
Sun, Xeric $code A* (Photo)
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GAZANIA - (Asteraceae) A very familiar group of composites found frequently in
garden centers and , in colder climates, used as annuals. However, the species
offered here are hardy South Africans that work well in perennial plantings and
rock gardens.
G. krebsiana TANAGER® - Fluorescent orange daisies from earliest spring to late
autumn create dazzling specimens ideal for mass displays. Glossy, dark green
leaves develop a deep purple tinge in the winter months. Reseeds moderately in
zone 5 and is hardy in protected microclimates. Native to South African and a
Plant Select® Recommendation for 2003. 2”(4”) x 10” Sun, Part Shade $code A
(Photo)
G .linearis COLORADO GOLD® - Glossy mounds of deep green, strap-shaped leaves
that are spangled with 3” shiny yellow flowers with patterned centers. Flowering
is most prolific in spring and fall but continues throughout the growing season.
This selection is reliably hardy in zones 4 - 8 (up to 9,000’). This plant was
chosen as a Plant Select® Introduction for 1998. 4”(6”) x 10” Sun, Part Shade $code A
(Photo)
GENISTA - (Leguminosae) These heat and sun-loving dwarf shrubs form dense mounds
of mostly leafless stems that are covered with yellow pea flowers in spring and
early summer. Most are easy to grow and thrive in any well-drained soil.
G. lydia - This spectacular shrub forms a low dense mound of mostly leafless
stems that are covered with large, bright yellow flowers in late spring. It is
very effective when planted on slopes where it can cascade over rocks. 12” x 36” Sun $code A
(Photo)
GENTIANA - (Gentianaceae) A large genus of plants commonly found in
temperate and arctic regions of the world. Often used in gardens,
particularly rock gardens, they are famous for their magnificent blue flowers.
They generally require an area that is not too hot and sunny with good drainage
and regular watering.
G. acaulis - NEW Many consider this to be one of the best Gentians
for the garden. The small mats of medium green foliage are covered with
sessile, deep-blue flowers in early spring. Swiss Alps 2" x 4"
Part Shade, Alpine $code A*
(Photo)
G. paradoxa - NEW
Stunning sky blue flowers
appear for an extended time in late summer over tufts of linear foliage.
This species will tolerate dryer and sunnier positions in the garden. 3"
(8") x 8". Sun, Part Shade $code A
GERANIUM magniflorum LA VETA LACE® - (Geraniaceae)
This alpine geranium from the Drakensberg Mountains of South Africa forms
compact, evergreen mounds of foliage, resembling finely textured parsley, that
take on hints of purple and scarlet in winter. The vivid purple flowers continue
from spring into summer. Adaptable and long lived. A Plant Select® Introduction
for 2003. 8” x 20” Sun, Part Shade $code A*
(Photo)
GLAUCIUM - (Papaveraceae) Members of this Mediterranean genus are known
as ‘horned poppies’ because of the horn-like seed pods that form after
flowering. Most species have very attractive incised, tomentose silver foliage,
attractive flowers, and are very drought tolerant.
G. acutidentatum - An outstanding species that forms compact mounds
of attractive , tomentose silver foliage and a profusion of deep orange flowers
with black throats. The flowers are followed by the characteristic horn-like
seed pods. Difficult to propagate, so seldom offered. Can be easily
deadheaded after flowering to control naturalization. Turkey 10”(20”) x 20” Sun,
Xeric
$code A* (Photo)
GRASSES (ORNAMENTAL) - There are many species of ornamental grass that
are of great use in the garden and landscape, providing texture and structure in
all seasons. Most of the species we list can be used effectively in
the rockery. All will grow in average garden conditions.
Calamagrostis brachytricha - A nice clump-forming grass with narrow
arching foliage and very attractive straw colored seed heads. This species
flowers in early fall and will perform in slightly shaded exposures. A
Plant Select® Recommendation for 2009.
24"(36") x 15" Sun, Part Shade $code A
(Photo)
Festuca idahoensis ‘Siskiyou Blue’ - Very blue foliage that is taller and
looser than the Festuca glauca hybrids. A softer look. 8”(12”) x 12” Sun $code
A
Festuca mariae - NEW Larger than most of the commonly offered species of
fescue, this species develops into an impressive specimen with rigid gray-green
leaves and feathery seed heads. 24" x 24" Sun $code A
Muhlenbergia reverchonii - NEW Native to a small area in north Texas, this
medium sized grass explodes into a profusion of tiny reddish-pink seed heads
floating above thin, mid-green foliage. Flowering in early fall, this
grass is resistant to deer browsing. One of the best recent introductions.
30" x 20" Sun $code A*
Panicum virgatum ‘Shenandoah’ - A very colorful Switch Grass
with red-tipped green foliage that changes to a striking blend of reds and
oranges in fall. The flowers form a haze of tiny seed heads. 48” x 18” Sun $code
A (Photo)
Schizachyrium scoparium 'The Blues' - A selection of the
great plains native 'Little Bluestem Grass'. This cultivar has been selected for
its intensely blue upright foliage. Attractive feathery seed heads are produced in
fall and the foliage turns to pinkish-gray. 24" x 12" Sun, Xeric
$code A
(Photo)
Sorgastrum nutans ‘Cheyenne’ - Very attractive native
ornamental grass with an upright growth habit and golden seed heads. Performs
well in drier growth conditions. 40” x 18” Sun $code A
Sporobolus heterolepis - A wonderful species that forms soft, weeping
mounds of dark green foliage and thin spikes of tan flowers. Very effective in
mass plantings. 10”(18”) x 15” Sun, Part Shade $code A
(Photo)
Sporobolus wrightii 'Giant Sacaton' - A wonderful southwestern
alternative to Pampas grass. This species develops into a fountain of luxuriant
foliage that explodes with fine-textured seed heads in late summer. A Plant
Select® Recommendation for 2006. 6’ x 4’ Sun, Part Shade $code A*
(Photo)
HESPERALOE parviflora 'Red Yucca' - (Agavaceae) You will find this Agave relative in use
extensively as a landscape plant in Phoenix, AZ and other mild climates, but it
has proven perfectly hardy for us here in Colorado. Absolutely no winter damage,
so the plants develop into attractive specimens. Produces tall spikes of
beautiful coral-red flowers that last throughout the summer. A Plant Select®
Recommendation for 2010. 18”(36”) x 18” Sun $code A
(Photo)
HETEROTHECA jonesii - (Asteraceae) Flat mats of gray-green
leaves studded with bright yellow daisies from spring to frost. Will grow in
xeric conditions, but performs better if given some moisture and good drainage.
Southern UT 1” x 10” Sun, Xeric $code A*
(Photo)
HIERACIUM - (Asteraceae) A mostly North American genus containing a
large number of species with attractive rosettes and, in most cases, yellow
flowers. Commonly called 'hawkweeds', they are easily cultivated, thriving
in sunny situations in poor soil.
H. tardans - NEW An outstanding species that forms tight
mats of silver foliage with attractive yellow flowers on 3" stems. This is
an agressive ground cover that will perform in a variety of situations and
spreads by rooting new rosettes each year, not by seed. The size of the mat can
be controlled, if desired, by trimming off the new rosettes from the perimeter
before they root in mid summer. Very much like a giant Antennaria.
Outstanding! 2"(5") x 36" Sun, Part Shade $code A
(Photo)
HIRPICIUM - (Asteraceae) A South African genus of Gazania-like composites
found growing in dryer exposed locations in the high Drakensberg. More durable
and heat tolerant than the Gazanias.
H. amerioides ‘Tiffendell Dwarf’ - A new variety collected near
Tiffendell, South Africa by David Salmon of High Country Gardens. The plants are
half the size of the species and form more congested mats of bristly gray-green
foliage. The white daisies with dark gray reverses appear from spring through
fall. Very cute! 2”(3”) x 6” Sun $code A
HYMENOXYS -
(Asteraceae) A large genus of yellow-flowered composites found on the prairies
and extending in range to the alpine tundra. Most are too large and course for
the rock garden but there are also some real gems that no garden should be
without.
H.
acaulis ssp caespitosa - An
outstanding dwarf alpine for the rock garden or trough! Condensed buns of
silver-tomentose leaves produce many short-stemmed yellow flowers in spring.
This plant comes from the alpine screes of Pikes Peak in Colorado. 2” (4”) x
4” Sun, Alpine $code A*
H. scaposa - NEW Masses of yellow flowers covering attractive
mounds of delicate green foliage from early spring to mid summer. Very
heat and drought tolerant. 3"(6") x 6" Sun $code A
(Photo)
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IRIS manchurica - (Iridaceae) An outstanding little Pseudoregelia
Iris from the steppes of Mongolia. Compact clumps to gray-green foliage with
numerous stems of bright yellow flowers opening at the top of the leaves.
Outstanding! Mongolia, China 6”(7”) x 6” Sun $code A*
(Photo)
INULA verbascifolia - (Asteraceae) Mounds of beautiful gray tomentose leaves
with nice short-rayed yellow flowers in summer. Very effective when planted in
hot, sunny rock garden settings or hardscape crevices. 4”(6”) x 10” Sun $code A (Photo)
JOVIBARBA HEUFFELII - (Crassulaceae) Very similar to Sempervivums
but unique in that they do not produce ofsetts on stolons but rather increase by
the existing rosettes dividing. They form tight clusters of colorful,
durable rosettes that will grow in brighter situations and seem to be less prone
to browsing by wildlife.
J. heuffelii 'Gold Bug' - NEW Attractive green rosettes that turn
golden-green is spring. 2" x 1.5" Sun, Part Shade $code A*
(Photo)
J. heuffelii 'Hot Lips' - NEW Dark red leaves with green bases and
silver edges. 2" x 2" Sun, Part Shade $code A*
(Photo)
J. heuffelii 'Orion' - NEW Soft gray-green leaves with a silver
edge. 2" x 2" Sun, Part Shade $code A*
(Photo)
J. heuffelii 'Sylvan Memory' - NEW Dark reddish-purple leaves with
a silver edge. 2" x 2" Sun, Part Shade $code A*
(Photo)
KHADIA alticola - (Aizoaceae) An outstanding species from the
mountains of South Africa, with succulent dark green foliage and large pink
flowers. S. Africa 2” x 4” Sun, Xeric $code A
(Photo)
KNIPHOFIA - (Liliaceae) Stout, rhizomatous perennial herbs native to Madagascar
and South Africa. Often referred to as ‘Red Hot Pokers’, the green or silver
rosettes of grass-like foliage produce spikes of flowers in shades of yellow,
orange and red.
K. caulescens 'Regal Torchlily' - Very robust rosettes of glaucous foliage and impressive
flower stalks of cream-yellow and red. This is a big one! A Plant Select®
Recommendation for 2010. S. Africa
24”(48”) x 24” Sun $code A*
(Photo)
K. hirsuta - Gray-green hirsute leaves and attractive
flower spikes of yellow with orange tops. Blooms in early summer and, at times,
re-blooms in late summer. S. Africa 6”(12”) x 12” Sun $code A
(Photo)
K. ‘Nancy’s Red’ - Nice selection with grass-like foliage and
deep orange-red flowers. 8”(12”) x 6” Sun $code A
K. triangularis - Thin grass-like light green foliage and nice flowers is
shades of yellow and rusty-orange. S. Africa 12”(15”) x 12”
Sun, Part Shade $code A*
LALLEMANTIA canescens - (Lamiaceae) A very attractive mint from Iran
producing spikes of large blue flowers with white stripes over mats of
gray-green foliage. 3”(8”) x 8” Sun $code A
(Photo)
LESQUERELLA – (Brassicaciae) The members of this genus, often referred to as
‘bladder-pods’, form inflated silvery-pubescent seed pods after flowering.
All flower early in spring when very little else is in flower.
L. arizonica - Very tight gray mats covered with yellow blossoms in early spring. 2”(3") x 6" Sun, Xeric $code A
(Photo)
L. sp. ’Penrose’ - Similar to L. arizonica but larger in foliage
and flower. Restricted to dry hillside around Penrose, CO. 3”(5’) x 8”
Sun, Xeric $code A
(Photo)
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MAIHUENIA poeppigii - (Cactaceae) An excellent mat-forming winter hardy
cactus from Patagonia. The spiny 2” stems are studded with glowing 2” yellow
flowers in summer. 2” x 12” Sun, Part Shade $code A*
(Photo)
MATTHIOLA montana - (Cruciferae) An exciting new introduction from the
mountains of Turkey. The compact mounds of long, gray-pubescent leaves are covered with abundant umbels of yellow-eyed, lavender-pink
flowers on stout 2” stems. 3”(5”) x 6” Sun $code A*
(Photo)
MINUARTIA - (Caryophyllaceae) Cushion forming plants similar in
character to Arenaria. Native to the alpine regions of Asia, Europe
and North America, most are of easy culture and provide interesting
foliage and prolific bloom from spring to early summer.
M. stellata - NEW Light green cushions of needle-like foliage and
nice white flowers in early summer. Long-lived and reliable. 2"(3")
x 6" Sun $code A
(Photo)
OENOTHERA - (Onagraceae) A large and widely distributed group of species
in the Western Hemisphere. Often referred to as ’evening primroses’, they
encompass a wide range of forms with a number of very nice plants and many that
are of little horticultural interest. Most are very drought tolerant and easy to
grow.
O. fremontii - One of the better ‘evening primroses’ with
attractive linear-lanceolate silver-green foliage and large yellow flowers from
early summer to frost. The flowers are followed by large four-winged seed pods. Kansas and Nebraska 4” x 24” Sun, Xeric $code A
O. fremontii ’Lemon Silver’ - An excellent selection with
large, broadly lanceolate silver-green foliage and spectacular, large
lemon-yellow flowers that glow in the afternoon and evening light from early
summer to frost.
The flowers are followed by large four-winged fruits. 4” x 24” Sun, Xeric $code
A (Photo)
OPUNTIA - (Cactaceae) The second largest genus of cactus with the
most extensive north-south distribution in the family. The plants are
composed of numerous jointed cylindrical stems or flat pads that are generally
heavily armed with long spines that arise from a small circle of small spines
called glochids. In some cases, only the glochids are present. Many
of the species and cultivars produce spectacular floral displays and are very
popular in xeriscape gardens.
O. debreczyi v. denuda 'Potato' - NEW Globe-shaped, spherical stems
with short glochids and occasional yellow flowers. The stems turn shades
of purple in winter. Ideal for rock gardens. Colorado Plateau into
south-central Wyoming 3" x 12" Sun, Xeric $code A*
(Photo)
OTHONNA capensis - (Asteraceae) This succulent composite forms mounda of fat,
cylindrical blue-green leaves and bright yellow flowers on thin 2" stems.
Flowers appear from spring through fall to make a grand display in the rockery.
A must for the succulent fancier. South Africa 2"(4") x 6" Sun $code A
(Photo)
OXYTROPIS - (Fabaceae) A group of marvelous dry land plants much like
Astragalus
with pinnate leaves and heads of pea flowers. Most require xeric treatment and
make excellent trough subjects.
O. besseyi v.
argophylla - RENEW Very
condensed cushions of silvery-white foliage and racemes of brilliant magenta
flowers. Beaverhead Co., MT 2”(3”) x 4” Sun, Xeric $code A*
(Photo)
O. multiceps - Silvery mounds of small lanceolate leaves adorned in
spring with bright pink flowers followed by white calyxes that inflate as the
seed develops. An outstanding trough plant.. Wyoming native 2” x 6”
Sun, Xeric $code A
(Photo)
O. splendens - Erect clumps of whorled pubescent silver leaves and woolly heads
of pink flowers. Park County, CO 4”(6”) x 4” Sun, Alpine $code A
(Photo)
PELARGONIUM - (Geraniaceae) A large group of annual and perennial herbs and
shrubs native mostly to South Africa with two species in Turkey. With the
exception of the Turkish species, all are not reliably cold hardy.
P. endlicherianum ’Select Form’ - Similar to the species but the leaves are
more finely divided and slightly hairy. The flowers are the same but the color
is an outstanding bright deep pink. Turkey 6”(12”) x 12” Sun, Part Shade $code
A*
(Photo)
PENSTEMON - (Scrophulariaceae) From the American West, Penstemons are the
work horses of the xeriscape or native garden, providing substance, shape and
long-lasting color. They're also adored by hummingbirds and butterflies.
P. alamosensis - Beautiful evergreen rosettes of large blue-gray leaves
and tall stems of brilliant coral-red tubular flowers. A beautiful specimen for
the xeric garden in or out of flower. A rare endemic from the mountains of
southern New Mexico. 3"(15") x 8" Sun, Xeric $code A
(Photo)
P. albidus - An excellent white-flowered species with green basal
rosettes and compact flower spikes. 2”(6”) x 4” Sun $code A
(Photo)
P. arenicola - Very similar to Penstemon nitidus with dense spikes of
glowing sky-blue flowers atop nice rosettes of glaucus foliage. One of the first
to flower in early spring. Wyoming 3”(6”) x 6” Sun, Trough $code A*
(Photo)
P. aridus - One of the smaller Penstemons, forming tidy mats of
dark-green leaves and 4” stems of attractive blue flowers. Makes an excellent
trough subject!
1”(5”) x 4” Sun, Trough $code A
P. cardinalis - Tall stems of dark red tubular flowers above
large rosettes of fleshy green leaves. Lincoln Co., NM 4”(20”) x 10” Sun, Xeric
$code A (Photo)
P. hallii - One of the most beautiful alpine Penstemons, this gem
is found in the high mountains of Colorado. Forms attractive clumps of dark
green linear foliage and short stems of violet-blue flowers in late spring. 4”(8”) x 6” Sun, Alpine $code A
(Photo)
P. jamesii - Another large flowered Penstemon with gray-green rosettes
and 9" flower spikes. One of the best for that hot dry spot in your garden.
3"(12") x 5" Sun, Xeric $code A
(Photo)
P. mensarum - Attractive mounds of bright green foliage and tall stems of
cobalt blue flowers. An outstanding species from the mountains of Colorado. 8”(20") x
12” Sun, Part Shade $code A
(Photo)
P. x mexicale RED ROCKS® - A hybrid made by Bruce Meyers between Mexican and
American wild Penstemons that has produced a stunning new introduction that is
both beautiful and easy to grow. Mounds of attractive dark green leaves produce
stems of bright rose flowers all summer. This plant is a Plant Select®
Introduction for 1999. 8"(15") x 15" Sun $code A
(Photo)
P. nitidus - Spectacular displays in earliest spring with many
flowered spikes of aquamarine atop blue-gray leaves. An indispensable member of
the early spring garden and marvelous companion for early spring bulbs.
Wyoming, Montana 4"(8") x 6" Sun, Xeric, Trough $code A
(Photo)
P. richardsonii v. dentatus - A more compact version of the species, with
entire, toothed leaves and bright lilac-pink flowers from mid summer and continuing
into autumn. 6”(9”) x 8” Sun, Part Shade $code A
(Photo)
P. superbus - Attractive blue-green foliage rosettes and tall spikes
of coral-red flowers. New Mexico, Arizona 4”(12”) x 8” Sun $code A*
(Photo)
P. superbus (Pink Form) - Glaucous foliage and tall stems of bright dark-pink
flowers. Makes quite a statement in the late spring garden! 6”(24”) x 8” Sun $code A
(Photo)
RABIEA albipuncta - (Aizoaceae) One of the most winter hardy of the South
African succulents, forming hard pads of dark green triangular leaves that are
covered in early spring with spectacular 1.5” glowing yellow flowers. Easy to
grow if given good drainage and full sun. 2” x 6” Sun, Xeric $code A*
(Photo)
ROSULARIA - (Crassulaceae ) A useful group of plants forming mounds of succulent
rosettes of small leaves with interesting variations of color and texture. All
perform well in a variety of settings, but are best displayed when planted among
rocks or in crevices. In parts of the country where sunlight is intense, provide
filtered shade at least during the afternoon and/or plant on an E to NE
exposure.
R. muratdaghensis - Succulent mounds of light green rosettes tinged with red on
the edges when grown in strong light. Nice cream flowers. 2"(4") x 6" Sun, Part
Shade $code A
(Photo)
R. sempervivum v. glaucophylla - An outstanding variety with blue-green
rosettes and stems of pure white flowers. 2”(5”) x 6” Sun, Part Shade $code A
RUSCHIA pulvinaris - (Aizoaceae) One of the best winter hardy succulents from the
high mountains of South Africa. Forms mats of stiff stems of
succulent triangular leaves that are covered with fuchsia-pink flowers in late
spring. 3” x 10” Sun $code A
(Photo)
SALVIA - (Lamiaceae) Members of this group of 'sages' are very useful in
providing color to the garden in late spring and early summer. The aromatic
foliage provides interesting shape and texture and large tubular two-lipped
flowers are produced in whorls along the tall flower spikes. Most require little
water and are easily grown.
S. daghestanica PLATINUM® SAGE
- Mats of light gray tomentose foliage with abundant spikes of
deep blue flowers. A Plant Select®
Recommendation for 2006. A real winner! 2”(8”) x 10” Sun $code A*
(Photo)
S. dorrii - Extremely aromatic silver foliage and glowing purple flowers. This
‘purple sage’ of the American West makes a very striking specimen in the xeric
garden. 8"(12") x 12" Sun, Xeric $code A*
(Photo)
S. greggii 'Wild Thing' - Aromatic mounds of dark, semi-evergreen foliage covered
with flushes of hot pink flowers much of the growing season. Brought to Plant
Select® by Tom Peace. A woody perennial best cut back in spring. A Plant Select®
Introduction for 2005. 15” x 10” Sun $code A*
(Photo)
S. henryi - NEW Gray-green pubescent foliage and flowering spikes
of bright red flowers. Native to the North American southwest, this salvia
has proven to be hardy for us when planted among rocks and with a southern
exposure. Very nice. 8" x 8" Sun $code A
(Photo)
S. jurisicii - This unusual Salvia forms a dense bush of ferny hirsute foliage
and produces deep-blue spikes of flowers for much of the summer. E. Europe 10”(15”) x 15” Sun $code A
(Photo)
S. pachyphylla 'Mojave Sage' - An exciting introduction from the mountains of
California! This shrubby perennial is much like S. dorrii but larger in all
aspects. The intensely aromatic, evergreen , silver-green leaves set off
persistent mauve bracts surrounding small blue flowers. Flowering from June to
frost. A Plant Select® Introduction for 2005. Spectacular! 30” x 30” Sun $code
A* (Photo)
SCROPHULARIA macrantha - (Scrophulariaceae) An outstanding and
versatile perennial with dark-green serrated leaves and glowing dark-red flowers
on a sub-shrub that continues to expand from the base. The flowers look like
‘Red Birds in a Tree. A Plant Select®
Introduction for 2008. 12”(24”) x 12” Sun $code A
SCUTELLARIA - (Lamiaceae) Known commonly as ’skullcaps’, these cosmopolitan
herbs provide a number of attractive rock garden species. Their bright flowers
and attractive foliage are always a welcome addition.
S. resinosa - An outstanding Great Plains native which forms a miniature
shrublet of small gray-green rounded leaves. In early summer the upper portions
of the stems are covered with blue-purple flowers with two prominent white
guidelines on the flaring lower lip. Don’t be without this one! 8” x 8” Sun $code A (Photo)
SEDUM - (Crassulaceae) A large genus of succulent plants with an amazing
variety of shapes and sizes. They perform well as groundcovers, crevice plants
and the larger species make attractive individual specimens. The winter
hardy species are tough and easy to grow and many are quite drought tolerant.
S. cauticola ‘Lidakense’ - One of the best fall blooming sedums,
forming attractive mounds of glaucus, purplish-gray foliage and gorgeous deep
pink flowers. 3”(5”) x 8” Sun, Part Shade $code A
(Photo)
S. corsicum - (Crassulaceae) Blue-green mounds of thin needle-like
leaves with reddish tinges when grown in strong light. Flowers have never been
produced so the compact foliage growth is maintained throughout the growing
season. 2" x 6" Sun, Part Shade $code A
S. dasyphyllum ‘Himalayan Skies’ - A more robust form of the species
with delicate, blue-gray globular foliage and light pink flowers in summer. Yunnan, China 2” x 4” Sun, Part
Shade $code A
S. ewersii ‘Rosenteppich’ - Attractive glaucous foliage covered with
superb deep pink flowers in mid to late summer. 2”(4”) x 6” Sun $code A
(Photo)
S. lanceolatum ‘Prueser’ - A more robust form of the species
discovered by Scott Preusser of Timberline Nursery. Colorado 2"(4")
x 6" Sun, Part Shade $code A
S. obtusifolium - (Crassulaceae) This outstanding species forms prostrate
mats of dark green rosettes that are evergreen. In spring, short flowering stems
of light red flowers are produced as the rosettes elongate. After flowering, the
flowering stems persist and turn an attractive dark brown. The rosettes return
in late summer and continue to be decorated by the flowering stems, producing an
intriguing specimen in the fall and winter. Outstanding! .75” (3”) x 4” Sun,
Part Shade
$code A* (Photo)
S. rupestre ‘Angelina’ - An outstanding cultivar with
trailing stems of gold-green foliage that turn a glorious orange in winter.
Originally found in a Croatian garden. 3”(5”) x 15” Sun, Part Shade $code A
(Photo)
SOLIDAGO sp. ‘Wichita Mountains’ - (Asteraceae) An outstanding
native from the Wichitas in SW Oklahoma with long standing tall flowering spikes of bright
gold flowers in late summer. A GreatPlants® selection in 2005. 30” x 24” Sun,
Xeric $code A
(Photo)
SPHAERALCEA caespitosa - (Malvaceae) This aristocrat of the Sphaeralcea clan
forms silver-gray tufts of pleated, fan-shaped leaves and sessile heads of large
orange flowers. Endemic to Great Basin limestone barrens and gravels in
west-central Utah. It wants unpampered, xeric treatment to maintain character. 2” x
6” Sun, Xeric $code A*
(Photo)
STOMATIUM - (Aizoiceae) An interesting genus of South African succulent
plants that form mats of variously textured and toothed foliage. The narrow-petaled yellow flowers appear in late afternoon and evening. They have proven to
be remarkably cold hardy.
S. agninum - A very attractive foliage plant, forming tight mats of
dull-green, roughened, green-dotted, rhomboidal leaves. Light yellow flowers,
but seldom flowers. Very hardy. South Africa 1.5” x 5” Sun, Xeric $code A
(Photo)
S. beaufortense - Compact mats of medium green foliage covered
with numerous small white dots and a few short teeth on the margins. Nice
yellow flowers opening in the late afternoon. South Africa 2" x 6"
Sun, Xeric $code A
(Photo)
S. loganii - Mats of medium-green foliage covered with
numerous white dots and with short teeth on the margins. Nice yellow
flowers opening in the late afternoon. 2" x 6" Sun, Xeric
$code A (Photo)
S. mustillinum - A very hardy South African succulent
forming mats of tightly spaced gray-green leaves roughened with many minute
white dots. Attractive yellow flowers with many narrow petals open in late afternoon.
One of the easiest winter hardy ‘iceplants’ to grow. 1” x 6” Sun, Xeric $code A
(Photo)
S. resedolens - Mats of light green foliage sparsely
marked with white dots and with numerous teeth on the margins. Nice yellow
flowers opening in the late afternoon. 3" x 6" Sun, Xeric
$code A (Photo)
TALINUM- (Portulacaceae) Another Lewisia relative with fleshy cylindrical
leaves growing from a thick stem or root stalk. The bright white, pink or
magenta flowers with golden stamens open in the afternoon and can be caespitose
or carried on tall thin stems. All will thrive in poor sandy soil in full sun
T. brevifolium - Compact clumps of sausage-shaped, opalescent leaves covered with
large bright pink flowers in summer. One of the best! 1” x 4” Sun $code A
(Photo)
T. spinescens- A miniature of T. calycinum, forming more condensed mounds with
the same hot magenta flowers. Makes a good trough specimen. 2"(5") x
5" Sun,
Xeric, Trough $code A*
TOWNSENDIA- (Asteraceae) These condensed asters are often called “Easter
Daisies” because they flower so early in the spring. Most have large caespitose
flowers of white, pink or lavender and form mounds of linear leaves of green or
silver. Most require a well drained soil in full sun. No garden should be
without a good selection of these wonderful plants.
T. exscapa- Forms tight buns of silver leaves covered in early spring
with large glowing white flowers often suffused with pink. This is a
particularly robust form grown from seed collected near Pueblo, CO. This
one is a must! 2" x 6" Sun, Xeric, Trough $code A
(Photo)
T. ‘Jeane’s Purple’ - An exceptional plant with dark
gray-green foliage and nice purple flowers. Excellent trough plant. 1” x 2” Sun, Part Shade, Trough $code A*
(Photo)
T. spathulata - Tight mounds of narrow, spathulate, silver
leaves and caespitose white flowers. Difficult in the open garden but an
outstanding trough plant! 2” x 4” Sun, Xeric, Trough $code A*
(Photo)
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VERBASCUM – (Scrophulariaceae) A large group of herbs native to Asia and Europe,
primarily the Mediterranean. Most are large summer flowering plants that provide
excellent vertical accents in gardens large enough to accommodate them.
V. bombyciferum - The most spectacular of the large
Verbascums, forming large, light gray, woolly rosettes and tall woolly flowering
spikes of yellow flowers. Very drought tolerant. 10”(48”) x 20” Sun, Xeric $code
A (Photo)
V. undulatum - A spectacular foliage plant forming large rosettes
of woolly leaves with undulating margins. Tall spires of yellow flowers are
produced in mid summer. (Greece) 12” (48”) x 12” Sun, Xeric, Biennial $code A
VERONICA - (Scrophulariacea) There are many forms of ‘speedwell’ from small mat-
formers to larger more erect plants that bear flowers on tall stems. Most are
easy to grow and thrive in sunny settings where only the hardiest will grow.
V. ‘Reavis’ CRYSTAL RIVER® - This excellent groundcover is a hybrid between
V. liwanensis and V. pectinata. Much like liwanensis in leaf and flower but
slightly larger and more vigorous. Tiny blue flowers appear in a solid mass in
spring, with scattered blooms throughout the season. A Plant Select®
Introduction for 2003. 3” x 24” Sun, Part Shade $code A
(Photo)
V. liwanensis 'Turkish Veronica' - Mats of small, glossy green leaves
covered in spring with clusters of showy blue flowers. One of the best ground
covering plants available! A
Plant Select® Introduction in 1997. 1” x 12” Sun, Part
Shade $code A (Photo)
V. oltensis - Another great miniature Veronica from the high mountains of
Turkey. The creeping mats of dark-green pinnate leaves are covered with
azure-blue flowers in spring. Relatively slow growing, this plant works well in
crevices in the xeric garden. .5” x 12” Sun, Xeric $code A
(Photo)
YUCCA - (Liliaceae) Yuccas are one of the signature plants in the
western xeriscape garden. Succulent and evergreen, they provide a strong
sculptural accent throughout the seasons with striking foliage and magnificent
flowers. There are many species, varying in size from 10' giants to cute 8"
miniatures. A surprising number are quite cold hardy.
Y. aff. angustissima - This attractive small yucca was found growing at
7500' near San Luis, Colorado. The numerous, narrow light green leaves are
generously decorated with white hairs that curl away from the edge of the leaf.
Very cute and very hardy. 6"(12") x 6" Sun, Xeric $code A*
(Photo)
ZAUSCHNERIA- (Onagraceae) This genus contains some of the most spectacular xeric
plants for the dryland rockery. They form upright or creeping green to
silver-leafed shrubs that in late summer erupt in a blaze of pink or red tubular
flowers which are very attractive to hummingbirds. These plants provide the much
needed splash of red in the yellow domination of fall, and the color lasts even
past the first frost. In colder areas, these plants are root hardy and the dead
foliage should not be removed until spring when new growth begins. They are best
planted in spring or early summer.
Z. californica
‘Etteri’ -
This form has a more prostrate habit with narrow,
silver-green leaves and nice red flowers. This form also blooms a little earlier
for us, beginning in late July. 12” x 20” Sun, Xeric $code A
Z. californica ‘Wayne’s Select’ - A great new addition with fantastic silver
foliage and muted scarlet flowers. Spreads more slowly then most. 18” x 20” Sun, Xeric $code A*
(Photo)
Z. garrettii ‘Siskiyou Dwarf’ - Smaller green-leaved form
with good scarlet flowers and more prostrate growth habit. This plant is an
early bloomer, starting in mid July and continuing to frost. 6” x 18” Sun, Xeric
$code A (Photo)