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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. x 'Garden Seedling' - Seed for these plants was collected from a self-sown seedling in my garden so the parentage is unknown. However, they will form attractive, spiny cushions of blue-gray and the flowers will likely be pinkish purple with silver papery bracts. 4" (6") x 8" Sun, Xeric $code A* (Photo)
ALLIUM - (Amaryllidaceae) A very large genus containing a
wide variety of plants including the onion, garlic, chives, scallion, shallot
and the leek. A vast majority of the species occur in temperate climates in the
northern hemisphere and all produce flowers in the form of an umbel on top of a
leafless stalk. With so many species to choose from, there is an Allium to suite
every situation and flowering season.
A. cyaneum - A delightful miniature forming tidy clumps of grassy foliage and nice cobalt-blue flowers in mid to late summer. China 5" x 4" Sun, Part Shade $code A (Photo)
A. cyathophorum 'Farreri' - NEW One of the most attractive dwarf onions, forming tight clumps of grassy leaves with nodding clusters of deep violet-purple flowers with sharply pointed petals. China 12"x6" Sun, Part Shade $code A (Photo)
A. senescens glaucum - A very nice dwarf form with swirling silver-gray foliage and short stems of light pink flowers. Europe to Siberia 2”(5”) x 5” Sun, Part Shade $code A (Photo)
A. togashii - New A very nice dwarf species, forming clumps of grassy foliage in spring producing attractive pale pink flowers in late summer. Japan 4"(6") x 4" Sun, Part Shade $code A (Photo)
ALOINANTHUS - (Aizoaceae)
This newly created 'Genus' contains complex hybrids between the South African
species of Aloinopsis
and have been selected for their unique flower colors. They are not reliably
hardy here in zone 5 but will survive some winters in warmer microclimates.
They are best planted among rocks with a southern exposure.
A. x ‘Morning Sky’ - A selection with flowers that 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 with flowers that are dark red-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’ - Pink with shades of electric blue and orange and 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. These plants are not reliably hardy in zone 5 but will survive some winters in warm microclimates.
A. acuta - NEW Very tight clumps of relatively small succulent leaves and nice yellow flowers. 2" x 4" $code A* (Photo)
A. 'Orange Rush' - Similar in color to Aloinopsis x 'Thai Dyed' but a more intense shade of orange. 1" x 4" $code A* (Photo)
AMSONIA - (Apocynaceae) A small group of perennial herbs native to North America and Eastern Asia. The tall stems are covered with attractive narrow foliage and clusters of star-shaped flowers are produced at the apex of each stem. Most are quite drought tolerant and of easy culture.
A. peeblesii - Numerous stems of narrow green leaves and apical clusters of blue buds that open into attractive white flowers. Coconino Co., AZ 12" x 10" Sun $code A (Photo)
ANTENNARIA aromatica - (Asteraceae) One of the best species in the genus, forming attractive spreading cushions of felted, whitish-green, aromatic rosettes and small, white flower buttons. Found on steep, west-facing granite screes. Carbon Co., MT 1.5"(2") x6" Sun $code A* (Photo)
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-like foliage. The buns are covered with short stems of small white flowers in early summer. Well suited for a small rock garden or sunny trough. Uintah Co., UT 1”(2”) x 4” Sun, Trough $code A (Photo)
A. 'Wallowa Mountain' - An excellent groundcover with very short and compact bright green foliage that resembles moss yet is very drought-tolerant. Superb for xeric and fairy gardens, permanent containers, and between paving stones in paths and on patios. A Plant Select® Introduction for 2015. 1" x 24" Sun, Part Shade, Xeric $code A* (Photo)
ARCTOTIS adpressa - (Asteraceae) Rosettes of succulent, iridescent silver foliage 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 cold hardy but does not do well in hot dry situations. South Africa 2”(5”) x 12” Sun, Part Shade $code A (Photo)
ASTRAGALUS - (Fabaceae) This 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. amphioxys '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! 4" x 10" Sun, Xeric $code A (Photo)
A. angustifolius ssp. pungens-
outstanding species that forms impressive compact mounds of silver-gray pinnate
foliage covered with white flowers in late spring. Easily grown Romania 6” x
20” Sun, Xeric $code A*
A. ceramicus - RENEW Sparse, wire-like foliage produces light pink flowers that are followed by attractive clusters of red-mottled birds’ eggs-like seed pods. Ferris Dunes, WY 3” x 6” Sun, Xeric $code A* (Photo)
Small mounds of silver-gray
foliage and purple-pink flowers with a white banner. Rio Blanco Co., CO 2” x
4” Sun, Xeric $code A* (Photo)
A. desperatus - RENEW Silver pinnate foliage and nice spikes of purple. Very cute! San Juan Co., UT 3” x 8” Sun, Xeric $code A* (Photo)
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. 2”(3”) x 4” Sun, Xeric $code A (Photo)
A. lutosus - An endemic to the oil shales of
Colorado, the small mats of prostrate pinnatified leaves produce small white
flowers followed by elegant sausage-like seed pods. Rio Blanco, Co., CO 1"
x 4" Sun, Xeric
$code A* (Photo)
A. mollissimus v. thompsoniae - 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. newberri - RENEW Silvery-white cushions of tomentose foliage and large purple-pink to magenta flowers with white lines inside the banner. Elko Co., NV 2" x 6" Sun, Xeric $code A* (Photo)
A. utahensis - A very distinctive Astragalus with light gray pubescent leaves and large luminescent pink flowers. 2” x 6” Sun, Xeric $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.
- 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)
B. jamesii v. albiflora - NEW This is
a white-flowered form of the species. 2" x 5" Sun, Xeric $code
BUKINICZIA cabulica - (Plumbaginaceae) Blue-green rosettes with unusual mottled leaves. Outstanding foliage plant with pink flowers the second year. Reseeds nicely. Pakistan 1"(6") x 6" Sun, Biennial $code A (Photo)
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 - Stunning neon-magenta flowers on linear, slightly hairy foliage. Peru 3"(6") x 6" Sun $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. coriacea - RENEW A choice Turkish species with nice clusters of upward-facing lilac-blue bells atop dense tufts of leathery, coarsely-toothed, pubescent foliage. Turkey 3”(6”) x 5” Sun, Part Shade $code A* (Photo)
C. incurva - A spectacular monocarp from northern Greece forming large mounds of pubescent, gray-green, serrated leaves and large upward-facing white to light purple bells. Adaptable to a variety of habitats. 3” (8”) x 8” Sun, Part Shade $code A (Photo)
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)
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 (Little Leaf Mountain Mahogany) - 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)
CONVOLVULUS - (Convolvulaceae) A 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. calvertii - New Attractive clumps
of linear, silver-green foliage and erect, hairy stems of white to pale pink
flowers. Sipicor Dag, Turkey 3"(5") x 5" Sun. $code A*
C. compactus - Congested mats of shimmering silver foliage and sessile white flowers. Superb! Turkey 2” x 8” Sun $code A* (Photo)
A large genus of small, ball-shaped cacti found growing from British Columbia
and southern Canada, throughout the United States and into southern Mexico.
They generally have attractive spination and often large showy flowers. A
number of species, including those listed below, have demonstrated excellent
cold tolerance and make excellent rock garden subjects as well as useful trough
C. echinus - A exciting new addition from west Texas! Forms mostly solitary stems 3”- 4” in diameter covered with thick white spines. Produces large yellow flowers with a red center. 4” x 3” Sun, Xeric $code A* (Photo)
C. hesteri - A small
clump-forming species with attractive red and brown spines and showy light
purple flowers. Texas 2" x 2" Sun, Xeric $code A*
CYRTANTHUS breviflorus -
(Amaryllidaceae) A robust form from the Drakensburg Mountains in South Africa,
with strap-like leaves emerging in spring followed by attractive yellow flowers.
The bulbs have proven hardy here through sub-zero winter temperatures growing in
full sun in irrigated rock garden conditions. Planting next to or within the
foliage of other plants to provide some cover in winter has proven to be most
successful. South Africa 8" x 4" Sun $code A
A genus of plants well
represented in western North America and generally found growing in harsh, dry
situations. They are challenge to cultivate in the garden, requiring xeric
conditions and strong light. The smaller species have proven to make good
C. compacta - RENEW Similar to C. caespitosa but smaller, and also requiring trough treatment. Millard Co., UT 1”(2”) x 4” Sun, Xeric, Trough $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. arbuscula v. radicans - NEW Dwarf shrubs of dark green foliage and very attractive light pink flowers. 3" x 8" Sun, Part Shade $code A** (Photo)
D. arbuscula ‘Muran Pinnacle’ - RENEW A great miniature form of the species with dark green foliage and dark pink flowers. 4” x 6” Sun, Part Shade, Trough $code A** (Photo)
D. x schlyteri 'Lovisa Maria' - NEW A dwarf cultivar with narrow, dark green foliage and nice lavender-pink flowers. 6" x 12" Sun, Part Shade $code A** (Photo)
D. x schlyteri 'Money-Coutts' - RENEW One of the most reliable dwarf cultivars originally grown by Money-Coutts Nursery. This outstanding cultivar forms dense mounds of narrow, 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. x susannae 'Lawrence Crocker' - RENEW 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. 12” x 24” Sun, Part Shade $code A** (Photo)
DEGENIA velebitica - (Brassicaceae ) RENEW 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 Mountain in 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 of the Denver Botanic Gardens. They all have beautiful flowers and interesting succulent foliage.
D. 'Alan's Apricot' PPAF (Alan's Apricot
ice plant) - A superior form with large 2" flowers covering the foliage
nearly all summer long. Flower color changes seasonally from a true
orangey-apricot to soft orangey-pink. Brought to Plant Select® by Alan Tower,
Spokane, WA. The hardiest and longest-blooming of the Plant Select® ice
plants. A Plant Select® Introduction for 2016.
1"(2") x 18" Sun, Part Shade $code A*(Photo)
D. '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. carterae '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. 2" x 8" 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. This cultivar has proven to be one of the best spreaders, covering large areas over time, and the foliage remains attractive throughout the winter. 1"(2") x 36" Sun $code A (Photo)
D. dyeri 'Psdold' (RED MOUNTAIN® ice plant) - A new hardy ice plant 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 ice plants. A Plant Select® Introduction for 2007. 1" x 8" Sun $code A* (Photo)
D. GRANITA™ Raspberry Ice Plant - NEW A beautiful and unique new ice plant discovered by John Stireman among hie planting of FIRE SPINNER™. A vigorous and floriferous plant with large, striking, iridescent raspberry flowers that are densely packed. A Plant Select® Introduction for 2018. 1"(2") x 12" Sun, Part Shade $code A* (Photo)
D. 'P001S' (FIRE SPINNER® ice plant) - This new introduction forms fast spreading carpets of green-apple foliage that keeps its shiny presence through winter. The flowers are massed in spring, but reappear periodically through summer. The purple and orange flowers represent a dramatic color breakthrough for the hardy ice plants. A Plant Select® Introduction for 2012. 2" x 18" Sun, Part Shade $code A* (Photo)
D. 'Psfav' (Lavender Ice ice plant) - 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 D. 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. 'PWWG02S' (RED MOUNTAIN® FLAME ice
plant) - A new hybrid selection of South African ice plant with small
succulent evergreen leaves and large blazing red-orange flowers in late spring
and early summer. This tough, vigorous cold-hardy selection was made by David
Salman of Waterwise Gardening. A Plant Select® Introduction for
2016. 2" x 24" Sun, Part Shade $code A*
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. 'John Proffitt' (TABLE MOUNTAIN® ice plant) - 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)
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.
ssp. ventricosus - NEW Tight mats of gray-green pointed foliage covered with hot pink flowers. A good
selection for dry sunny slopes. Macedonia 2” x 6” Sun, Part
Shade $code A* (Photo)
D. myrtinervious ssp. caespitosus - NEW Very dwarf, compact cushions of glaucous foliage and attractive stemless, solitary, rose-purple flowers. Kajmakcalan, Greece 1.5" x 5" Sun, Part Shade $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)
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)
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. imbricata - Buns of compact foliage adorned with scapes of bright yellow flowers. Caucasus 1”(2”) x 4” Sun, Alpine $code A* (Photo)
D. zapateri (syn. D. dedeana) - Cushions of attractive
, bright green, ciliated foliage and pure white flowers on short stems.
One of the best white flowering species. Mountains of northern and
eastern Spain 2"(3") x 5" Sun, Part Shade $code A
DRACOCEPHALUM - (LAMIACEA) A genus of 60 to 70 species native to the temperate regions of the Northern Hemisphere. Often referred to as dragonheads, they are generally not challenging to grow and many of the species make excellent rock garden subjects.
D. bipinnatum - NEW A low growing suffruticose plant with
linear, toothed light green leaves and stems of large blue-violet flowers.
Tian-Shan, Kyrgyzstan 4"(8") x 10" Sun, Part Shade $code A
D. heterophyllum - NEW Cushions of dark green, oval, scalloped leaves and heads of attractive white flowers on short stems. Pamir, Kyrgyzstan 3"(5") x 8" Sun, Part Shade $code A (Photo)
D. nutans - NEW Tufts of dark green, crenate foliage and stems of attractive, dark blue flowers. Tien-Shawn, Kyrgyzstan 3"(7") x 6" Sun, Part Shade $code A (Photo)
D. oblongifolium - NEW Compact cushions of hairy, crenate, light green foliage and scapes of large blue flowers. Tien-Shawn, Kyrgyzstan 3"(6") x 8" Sun, Part Shade $code A* (Photo)
D. origanoides - NEW Dwarf, compact cushions of small, crenate, gray-green foliage and stemless heads of attractive blue-violet flowers. Tien-Shawn, Kyrgyzstan 2"(3") x 8" Sun, Part Shade $code A* (Photo)
D. paulsenii - Small prostrate mats of gray-green crenate foliage adorned with racemes of purple flowers. An outstanding species for troughs and crevice gardens. Tajikistan, Koitezek Pass, Pamir 1"(2") x 6" Sun, Part Shade $code A* (Photo)
D. stamineum - NEW - Tufts of gray-green, crenate foliage and stems of purple-blue flowers. Alaj Range, Kyrgyzstan 3"(5") x 6" Sun, Part Shade $code A (Photo)
EBRACTEOLA wilmaniae - (Aizoaceae) An outstanding South African succulent forming compact highly branched rosettes of trigonus gray-green leaves. The white to dark-pink flowers appear in early spring and flowering continues sporadically throughout the growing season. A slow growing mat will form with age. This species has proven to be reliably winter hardy for us. North Cape Province, SA 2” x 4” Sun $code A* (Photo)
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 v. kuenzleri - Clusters of dark-green stems with areoles containing three to four stout radial spines and usually one central spine. The large magenta flowers appear in mid-summer and are followed by burgundy-red fruits. 5” x 3” Sun, Xeric $code A* (Photo)
E. reichenbachii v. albispinus -
Clumping barrels covered
with dense white spines adorned with pale pink flowers. 3" x 2" Sun, Xeric
$code A* (Photo)
E. reichenbachii v. caespitosus - Single, mushroom-shaped stems with chalky-white radial spines and no centrals. The large flowers are light pink with a white center. Easy to grow and very hardy. Kimble Co., TX 5" x 3" Sun, Xeric $code A* (Photo)
ECHINACEA tennesseensis (Tennessee Purple Coneflower) - (Asteracea) This American coneflower, once endangered in the wild, produces beautiful purple-pink flowers during the summer, always facing east so be sure to site properly. A Plant Select® Recommendation for 2013. 7"(15") x 14" Sun, Part Shade $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, Part Shade $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
caespitose, upward facing, blue bell flowers. Very showy and particularly well suited for
walls and crevices. 2" x 6” Sun, Part Shade $code A
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* (Photo)
peristenia (Englemann's Daisy) - (Asteracea) An
incredibly tough and adaptable perennial wildflower of the Southern Great
Plains. Rosettes of crisp, ruffled gray foliage are adorned nearly all summer
with stems of bright yellow daisies. A Plant Select® Recommendation for
2015. 24" x 14" Sun, Part Shade $code A* (Photo)
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. 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. allenii - NEW One of the few eastern species, forming attractive rosettes of large, felted, paddle-shaped leaves. In mid-summer, numerous branched umbels of golden flowers are produced atop tall, stout stems and the color lasts until late summer. West Virginia 3"(10") x 6" Sun, Part Shade $code A (Photo)
E. compositum - RENEW Rosettes of lanceolate, tomentose foliage produce stout stems bearing umbells of attractive yellow flowers. 3"(8") x 8" Sun, Xeric $code A* (Photo)
E. kennedii - RENEW One of the more easily grown species, forming nearly flat mats of tiny silver-white elliptical leaves in tiny rosettes. The red and cream flower heads sit atop the mats on short stems. Ventura Co., CA 1”(2") x 8” Sun, Alpine $code A* (Photo)
E. pulchrum - A perfect tiny shrub with clouds of pure white, ivory or pink flowers in late summer and autumn. 5”(8”) x 8” Sun, Xeric $code A* (Photo)
E. siskiyouense - RENEW Dense mats of small blue-green rosettes producing 1” lemon-yellow pom-poms on short stems. The flowers age to raspberry red. Siskiyou Co., CA 2”(5”) x 6” Sun, Xeric $code A* (Photo)
E. umbellatum v. aureum 'Psdowns' (KANNAH CREEK® Buckwheat) - 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* (Photo)
E. umbellatum v. dumosum - RENEW Mats of small oval leaves, densely tomentose on both surfaces, and bright yellow flowers with crimson streaks. Siskiyou Co., CA 3"(6") x 8" Sun, Xeric $code A* (Photo)
E umbellatum v. humistratum - RENEW Dense mats of silver-gray leaves and large umbels of bright yellow flowers on strong upright stems. The flowers change to shades of orange and red as they age. A choice alpine from the Trinity Mountains, Siskiyou Co., CA 3”(6”) x 8” Sun, Alpine $code A* (Photo)
E. umbellatum v. humistratum 'Tahoe' - RENEW A great form of variety, with even more condensed foliage and shorter spikes of yellow flowers. Develops into a magnificent specimen. Lake Tahoe, CA 3"(5") x 8" Sun, Xeric $code A* (Photo)
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. 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. vivipara v. buoflama - Globes of densely interwoven white spines with dark brown tips. Attractive flowers that vary from yellow to peach to pink. 3” x 3” Sun, Xeric $code A* (Photo)
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® gazania) - 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 'P004S' (COLORADO GOLD® gazania) - 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)
GERANIUM dalmaticum (Dalmatian Pink Cranesbill) - A low-growing diminutive perennial with dainty cleft, aromatic glossy green leaves that turn red in the fall. The mats are covered with clear pink flowers from late spring to early summer. A Plant Select® Petites Recommendation for 2014. 4" x 10" 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. Most 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.
Bouteloua gracilis 'Blonde Ambition' 'PP 22,048 - An impressive, highly ornamental form of Western native grass with tall, upright stems. Showy chartreuse, aging-to-blonde seed heads hold their straight shape and are displayed high above the foliage through winter, providing many months of color and texture. Developed by High Country Gardens. A Plant Select® Introduction for 2011. 30" x 30" Sun, Partial Shade $code A* (Photo)
Calamagrostis brachytricha (Korean Feather Reed Grass) - 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)
Muhlenbergia reverchonii 'PUND01S' (UNDAUNTED® Ruby Muhly) - 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. A Plant Select® Recommendation for 2014. 30" x 20" Sun $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
HETEROTHECA jonesii x villosa 'Goldhill' (Goldhill Golden-Aster) - Tufted grey "scatter rugs" of fuzzy foliage make dense mounds in a sunny garden. The mounds are clothed with cheerful yellow daisies from late winter to fall. This natural hybrid combines the dense habit of its rare parent H. jonesii with the vigor of the more common H. villosa. 'Goldhill' is apparently sterile so won't seed around like its common parent. Prefers well drained soil. A Plant Select® Petites Introduction for 2015 3" x 8" Sun $code A* (Photo)
HEUCHERA - (Saxifragaceae) A large genus of perennial herbs mostly from western North America. The rhizomatous roots are covered with attractive tufts of rounded-cordate foliage and the flowers are born on tall, slender stems. There are a multitude of fancy hybrids on the market today, but the natives are better suited for the rock garden. Most are quite drought tolerant.
H. abramsii - A choice dwarf Heuchera from the San Gabriel Mountains of California. Attractive clumps of glossy green foliage adorned with clouds of nice light pink flowers. 3"(6") x 6" Sun, Part Shade $code A (Photo)
H. pulchella (SANDIA CORALBELLS) - Attractive mats of dark green foliage adorned with short spikes of pink to burgundy, hairy bells. A Plant Select® Petites Recommendation for 2013. Bernalillo Co., NM 3"(6") x 8" Sun, Part Shade $code A* (Photo)
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* (Photo)
H. acaulis 'Las Vegas' - A dwarf form found near Las Vegas, NM with narrow silver foliage and yellow flowers on short stems. San Miguel Co., NM 1"(2") x 3" Sun, Xeric $code A* (Photo)
H. torreyana - RENEW Mounds of woolly silver-green leaves and large sessile yellow daisies in early spring. One of the best! Utah 3”(4”) 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)
IRIS hookeri (Dwarf Beach-head Iris) - (Iridaceae) Tidy clumps of attractive green foliage framing large, porcelain-blue flowers in late spring and early summer. One of North America's most beautiful native irises, and provides foliage and textural accent for small gardens. A Plant Select® Petites Recommendation for 2014. 4"(7") 7" Sun, Part Shade $code A* (Photo)
JOVIBARBA heuffelii - (Crassulaceae) Very similar to Sempervivums
but unique in that they do not produce offsets 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. The rosettes retain their attractive colors throughout
J. heuffelii 'Gold Bug' - Attractive green rosettes that turn golden-green in early spring. 2" x 1.5" Sun, Part Shade $code A (Photo)
J. heuffelii 'Giuseppi Spiny'- Brownish-red leaves with sharply pointed tips. Medium sizes rosettes 2" x 2" Sun, Part Shade $code A* (Photo)
J. heuffelii 'Hot Lips' - Dark purplish-red leaves with green bases and silver edges. 2" x 2" Sun, Part Shade $code A (Photo)
J. heuffelii 'Irene' - Burgundy-red rosettes with light yellow-green at the base and on new leaves. 2" x 3" Sun, Part Shade $code A*(Photo)
J. heuffelii 'Mystique' - Unusually short, wide, dark reddish-purple leaves forming medium sized rosettes. 2" x 3" Sun, Part Shade $code A* (Photo)
J. heuffelii 'Orion' - Soft gray-green leaves with a silver edges. 2" x 2" Sun, Part Shade $code A (Photo)
J. heuffelii 'Sun Dancer' - Pale
yellowish-green rosettes with leaves tips painted reddish-purple. 2" x 3" Sun,
Part Shade $code A
J. heuffelii 'Sylvan Memory' - Dark reddish-purple leaves with a silver edge. 2" x 2" Sun, Part Shade $code A (Photo)
J. heyffelii 'Tan' - Attractive
bronze-red leaves with a touch of blue-green at the base. 2"x2" Sun, Part Shade
$code A* (Photo)
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 – (Brassicaceae) 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. Coconino Co., AZ 2”(3") x 6" Sun, Xeric $code A (Photo)
L. ovalifolia - NEW Compact mounds of silver-gray oval foliage and loose racemes of nice yellow flowers in early spring. Pueblo Co., CO 2"(4") x 5" Sun, Xeric $code A (Photo)
L. sp. 'Penrose' - Similar to L. arizonica but larger in foliage and flower. Restricted to dry hillsides around Penrose, CO. 3"(5") x 8" Sun, Xeric $code A (Photo)
LIMONIUM minutum - (Plumbaginaceae) Cushion-like masses of spathulate-leaved rosettes produce numerous spikes of small violet flowers. Southeastern France 3"(7") x 6" Sun $code A* (Photo)
(NARBONNE BLUE FLAX) -
Mediterranean form of blue flax that is longer lived and fuller than our native
species. This robust plant forms dense mounds of nearly evergreen foliage
covered with deep sky blue flowers for months. A
Plant Select® Recommendation
for 2013. 12”(15”) x 15” Sun, Part
Shade $code A* (Photo)
MATTHIOLA montana - (Brassicaceae) RENEW An exciting new introduction from the mountains of Turkey. The compact mounds of long, gray-pubescent leaves are covered with abundant umbels of fragrant, yellow-eyed, lavender-pink flowers on stout 2” stems. 3”(5”) x 6” Sun, Part Shade $code A (Photo)
MINUARTIA - (Caryophyllaceae)
Cushion forming plants similar in character to
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
M. stellata - RENEW Light green cushions of needle-like foliage and nice white flowers in early summer. Long-lived and reliable. 2"(3") x 6" Sun, Part Shade $code A (Photo)
MOLTKIA petraea - (Boraginaceae) A spectacular, highly-branched sub shrub forming a gradually increasing mounded mat of blue-green foliage and producing numerous 4" flowering stems topped with clusters of dark sky-blue flowers. Very drought tolerant. Albania to Dalmatia 5"(8") x 12" Sun $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' - 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)
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. chionoba - RENEW An excellent species from Kyrgyzstan, forming caespitose cushions of white tomentose foliage. The stemless clusters of 1-3 large violet flowers develop into long white pods. 2” x 4” Sun, Alpine $ 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. prenja - Cushions of white lanate foliage and dark purple flower. This species has proven to be a reliable performer in troughs and in the garden. Mavrovo, Macedonia 3”(5") x 4” Sun, Alpine $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)
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. arenicola - Very similar to Penstemon nitidus with dense spikes of glowing, sky-blue flowers atop nice rosettes of glaucous foliage. One of the first to flower in early spring. Wyoming 3”(6”) x 6” Sun, Trough $code A* (Photo)
P. laricifolius v. laricifolius - Very floriferous species with grass-like linear green foliage and numerous stiff, thin flowering stems of pinkish-purple flowers. Excellent trough plant! Fremont CO,. WY 2”(6”) x 4” Sun, Trough $code A* (Photo)
P. mensarum (Grand Mesa Beardtongue)- Attractive mats of evergreen foliage and stunning cobalt blue spikes in early spring that last for nearly two months. The foliage turns a lovely orange-red in winter. An outstanding species restricted to the mountains of Western Colorado. A Plant Select® Recommendation for 2011 8”(20") x 12” Sun, Part Shade $code A* (Photo)
P. pseudospectabilis (Desert Beardtongue) - A large species with dark green toothed leaves that clasp the base and become disk-like on the upper parts of the stem. The flowers are glandular and pink to rose-pink. A great plant for the large dry garden. A Plant Select® Recommendation for 2015. Catron Co., NM 8"(20") x 10" Sun, Xeric $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)
P. uintahensis - Leathery rosettes of dark-green linear-spathulate foliage and numerous short stems of very attractive sky-blue flowers. Large enough to be effective in the rock garden yet small enough to use as the centerpiece in a partly shaded trough. One of the easiest of the smaller species to grow and flower. Uintah Co., UT 2"(5") x 5" Sun, Part Shade $code A (Photo)
PHYSARIA - (Brassicaceae) A spectacular group of of plants often referred to as ‘bladderpods’. They form rosettes of broad silver-gray leaves and produce stems of yellow to white flowers that radiate from the base of the rosette. After flowering, inflated seed pods develop, providing an interesting display throughout the summer. All require full sun and good drainage.
P. rollinsii - RENEW One of the smallest of the Genus, forming silver-gray rosettes with attractive yellow flowers. An excellent trough subject. Saguache Co., CO 1” x 2” Sun, Alpine $code A* (Photo)
(Moroccan pincushion flower) -
Attractive congested mats of crinkled
evergreen foliage and attractive, stemless, scabiosa-like mauve flowers. The
flowers are followed by fuzzy, fawn-brown seed heads. A Plant Select® Petites
Recommendation for 2016. Turkey Sun 2” x 12”
$code A* (Photo)
RABIEA - (Aizoaceae) This genus of succulent plants is native to South Africa. The plants form compact mounds of rosettes with sickle-shaped leaves that arise from thick tuberous roots. A number of the species in this group have proven to be some of the most winter hardy of the South African succulents.
R. albipuncta - 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 4” Sun, Xeric $code A* (Photo)
RHAMNUS pumila - (Rhamnaceae) New
An outstanding dwarf shrub for the rock garden with rock-hugging prostrate stems
covered with attractive, shiny green foliage. The plants are dioecious and the
insignificant, pale green flowers produce small globose blue-black fruit on the
female plants in early summer. Very slow growing. Central and Southern Europe
4" x 12" Sun, Part Shade $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. sempervivum - Robust, glossy-green rosettes and stems of attractive pink flowers. Caucasus to Asia Minor 2”(5”) x 6” Sun, Part Shade $code A (Photo)
SALVIA - (Lamiaceae) Members of this group of 'sages' are very useful in providing color to the garden from late spring through summer and into fall.. 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. 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. 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
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)
S. phlomoides - An extremely attractive species from Morocco, forming rosettes of tomentose, gray-green foliage and impressive spires of purple flowers. 3”(8”) x 8” Sun $code A* (Photo)
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
shrub 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
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. sediforme (TURQUOISE TAILS BLUE SEDUM) - A robust and compact heirloom species native to the Mediterranean with succulent blue foliage and creamy-yellow flower. A Plant Select® Introduction for 2013. 3”(6”) x 12” Sun, Xeric $code A* (Photo)
SILENE - (Caryophyllaceae) Summer -blooming plants for the sunny rock garden. The frequently notched or cut five-petaled flowers of white, pink or red are carried on short stems which arise from a fleshy root stalk.
S. lacineata - Rosettes of light-green lanceolate leaves produce 14" flowering stems of starry red-orange flowers all summer. 4"(14") x 6" Sun, Part Shade $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, performing well at least down to Zone 5.
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. mustillinum - A very hardy South African succulent forming mats of tightly spaced gray-green leaves roughened with many minute dots. Attractive yellow flowers with many narrow petals open in late afternoon. One of the easiest of the South Africans to grow in cold climates. 1” 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! Utah 1” x 4” Sun $code A (Photo)
(Lamaceae) A large
group of herbs, shrubs and sub shrubs of wide distribution, especially in the
Mediterranean region. Most have attractive, aromatic foliage, attractive
flowers and are generally quite drought tolerant.
T. aroanium - Mats of attractive, silver foliage and large soft lavender flowers. This is the true species and much different from the plant that is commonly in the trade. Greece 2" x 12" $code A* (Photo)
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 from green to silver. Most require a well drained soil in full sun. No garden should be without a good selection of these wonderful plants.
T. hookeri - Dense tufts of linear, silver-gray leaves and sessile white to pale lavender flowers in early spring. Jefferson Co., CO. 2” x 4” 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. leptotes - Tufts of linear, silvery leaves with white to pale pink flowers embedded in the foliage. Sanpete Co., UT 1” x 2” Sun, Xeric, Trough $code A* (Photo)
rothrockii - A
very adaptable alpine species, forming mats of dark green leaves covered with 1"
light lavender daisies in earliest spring. 2” x 6” Sun, Alpine $code A
VERONICA - (Scrophulariaceae) 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. 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)
V. x 'P018S' (SNOWMASS® blue-eyed Veronica) - NEW Small, glossy, rounded leaves form a dense mat, covered by a stunning display of small, four-petaled white flowers with a blue eye. It fills in quickly and vigorously, spreading across the garden by stems which root themselves in the soil. A Plant Select® Introduction for 2017 1" x 18" Sun, Part Shade $code A* (Photo)
XYLORHIZA venusta - (Asteraceae) NEW Attractive clumps of gray-green foliage producing numerous stems of large creamy-white daisy flowers in early summer. An extremely drought-tolerant perennial endemic to the northwest section of the Colorado Plateau. Duchnesne Co., UT 6"(12") x 8" 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. angustissima - Attractive rosettes of long, narrow leaves lined with filament hairs and tall spikes of cream flowers. Mesa Co., CO 18"(36") x 16" Sun, Xeric $code A* (Photo)
Y. harrimaniae 'San Luis' - This attractive small yucca was found growing at 8000' 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
ZIZIPHORA clinopodioides - (Lamaiceae) NEW A small mounding subshrub with highly aromatic light green foliage and attractive light lavender flowers in early summer. Turkey, Iraq, Iran, Afghanistan, Central Asia 3" x 8" Sun, Part Shade $code A* (Photo)