| Name / Source |
Description |
Height x Width |
Germination info |
| Salix arctica |
Prostrate woody shrub has grayish, oval, pointed leaves and silky white hairs on long brown catkins. |
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| Salvia aff. caespitosa |
Larger in all part than caespitosa, floriferous, upright and well-proportioned. A promising discovery. Try it! A favorite in my garden, sage green lobed leaves, traced in white, on a multistemmed mound. I would grow it for the gorgeous foliage but add whorls of large purple flowers, terminating the stems and you have a real winner. Picture |
12" x 20" |
OT or GA3 |
| Salvia aff. heldreichii |
Aromatic shrub with small gray decorative leaves and probably light violet flowers. Found on hot, chalky slopes. |
12" x 20" |
|
| Salvia argentea |
Huge silvery leaves attract a lot of attention. Cut off the 2-3' spikes of large white flowers to prolong the life of the plant.. Xeric. |
|
JC, 70°F, L |
| Salvia azurea var. grandiflora |
Willowy stems of showy azure flowers in late summer. Floppy habit can work as a groundcover, spreading 2' and rising only 6" in a loose mat. Nebraska native. |
|
|
| Salvia caespitosa |
Large lilac-blue flowers in short clusters with attractive fragrant, silver haired, crenate, pinnate leaves on woody branches. This choice beauty demands good drainage. Picture |
4" x 12" |
OT or GA3, L 70°F |
| Salvia candidissima |
Wide silvery leaves to 4 inches long. Bright white spires bloom in mid-spring. Good filler and workhorse that does not need water. Xeric. |
|
L 70°F |
| Salvia cryptantha |
Attractive 8" high perennial herb, classic sage leaves with large yellow-green bracts. |
|
|
| Salvia daghestanica |
It's hard to believe this long lived, mat forming gem that upstages even dusty miller in whiteness was considered challenging to grow a few years ago. It is becoming a major component of xeriscape gardens in the Rockies, and comes quickly from seed: you can fill your garden with this brilliant blue flowered powdery leaved groundcover! |
10" x 15" |
JC, 70°F |
| Salvia dorrii |
Glowing purple flowers with bright silver foliage are stunning in the strong light of Xeriscape. Don't be without this purple sage. |
18" |
JC, 70°F, L |
| Salvia dorrii |
This dense shrub is common throughout the Great Basin and Colorado Plateau, as well as the Columbia plains. It is usually quite massive and variable in flower color. This dwarf race is especially bright blue in color and has small leaves of special whiteness. Similar to the spectacular Salvia pachyphylla, only blooming much earlier in the spring. |
8" x 15" |
JC, L, 70°F |
| Salvia greggii |
Vibrant cerise flowers produced in flushes following moist spells from late spring to late autumn. Very drought and heat tolerant once established. One of the hardiest forms of S. greggii, to zone 5 so far. |
18" x 12" |
L, 70°F |
| Salvia hypargeia |
Heavy textured, white leaves with cool spires of lavender flowers. Xeric. |
15" to 18" tall |
JC, 70°F, L |
| Salvia jurisicii |
A favorite among recently introduced perennials. Ferny foliage forms a dense bush with a myriad of lavender blooms for much of the summer. Prefers clay soil and full sun. |
10" x 15" |
L 70°F |
| Salvia lyrata |
Flat rosettes of shiny, purple leaves strike a dramatic note in sun or shade, with a constant succession of graceful flower stems. Excellent counterpoint to all the silver leaf beauties. |
14" x 8" |
JC 70°F L |
| Salvia macrochlamys |
Mottled pink and white faces on huge, colored bracts. Very different. A rare species in cultivation. |
To 12" |
JC, 70°F, L |
| Salvia microphylla ssp. wislezenii |
The hardiest of the Salvia greggii complex, this highly variable subshrub forms trim mounds of fine foliage and a long season of pink to magenta flowers in late summer and fall. Originating on Mt. Lemmon above Tucson, this is a long lived, hardy perennial. |
30" x 15" |
[L 70°F] |
| Salvia pachyphylla |
Ever-silver shrub that has proven indestructible in xeriscape conditions in Colorado, with 4-6" clusters of intensely aromatic purple flowers with colorful pink calyces that make for a very long season of beauty in summer and fall. A gem! Performs better in clay soil. |
15" x 20" |
JC, L, 70°F |
| Salvia pisidica |
Striped bright blue and white faces smother a dense mat of silver trefoil leaves. Outstanding groundcover for xeric or large rock gardens |
3" x 14" |
JC, 70°F, L |
| Salvia potentillifolia |
Dwarf shrub has tiny pinnatisect, gray leaves and yellow flowers in 2-8 whorls up the short stems. From a rocky steppe site. |
6" x 15" |
|
| Salvia pratensis |
Picture |
|
|
| Salvia recognita |
Giant spires of huge pinkish lavender flowers and lush gray cutleaf rosettes. To 48 inches. |
|
JC, L, 70°F |
| Salvia x superba 'May Night' |
Common hybrid creates a symmetrical mound of purple spikes which re-blooms heavily if first blooms are sheared in early July. |
24"x30" |
SL, 70°F |
| Sambucus racemosa |
Low growing Rocky Mountain shrub has light apple-green pinnate leaves offsetting striking red elderberries in late summer. Picture |
24"x36" |
|
| Saponaria caespitosa |
Dense mats of succulent talons, bear clusters of single pink flowers in summer. |
3"x4" |
JC, 40°F |
| Saponaria chlorifolia |
Blue glaucous overlapping leaves on trailing stems. Tiny orchid pink flowers peek from origanum-like calyxes. |
1" x 6" |
SL, CS 3wk, 70°F |
| Saponaria pulvinaris |
Tight mats of rich green pointed leaves comparable to Silene acaulis ringed with splayed masses of tiny mauve flowers. Impressive rock garden bun that is easy to grow! Picture |
1" x 8" |
JC 70°F |
| Saponaria pumilio (pulvinaris) |
Green mats with rose flowers in dense, 1" inflorescence. |
|
|
| Saussurea weberi |
Unusual, high alpine composite has clustered heads of dark purple disc flowers amidst coarse, hispid, lanceolate leaves. A Rocky Mountain endemic. Picture |
6"x4" |
L 70°F |
| Saxifraga x Geum |
Shade loving saxifrage with sparsely hairy leaves and airy white sprays of bloom. |
5" x 8" |
SL, 70°F |
| Saxifraga x macnabiana |
Another giant silver saxifrage with some cotyledon ancestry--one of our most floriferous and persistent. |
20"x10" |
|
| Saxifraga aspera |
Linear leaf tufts covered with frothy sprays of white flowers, like a tiny Babies Breath. |
7" x 12" |
|
| Saxifraga biasaletti |
Picture |
|
|
| Saxifraga bronchialis ssp. austromontana |
Dense, prickly mats of dark green rosettes studded with fascinating dotted stars much of the early summer. |
|
SL, 70°F |
| Saxifraga bronchialis ssp. funstonii |
Densely tufted linear leaves are obscured in early summer with pale yellow, heavily dotted flowers. Best in crevice or trough. |
3" x 6" |
SL, 70°F |
| Saxifraga caespitosa |
The tiny Rocky Mountain version of mossy saxifrage, has white flowers with pronounced red stamens. |
3" x 2" |
SL, 70°F |
| Saxifraga chrysantha |
Diminutive apple-green mats produce sizable round-petaled bright yellow flowers. A challenge! Picture |
|
OT or SL 70°F |
| Saxifraga cochlearis |
Tiny, knobby and very white rosettes, with wiry stems and dazzling white flowers in late spring. |
8" x 8" |
SL, 70°F |
| Saxifraga crustata |
One of the smallest and trimmest of silver saxifrages. The rather dark rosettes are accentuated with leaf-edge lime deposits, and the flowers are a subtle shade of cream. Very easy to establish and grow. |
4" x 10" |
SL, 70°F |
| Saxifraga ferdinandi-coburgi |
One of the toughest Porophyllum (a.k.a. Kabschia) saxifrages, has deep blue-green mats of tiny rosettes with heavenly yellow, cup blooms in early spring. Picture |
3"x 10" |
SL 70°F |
| Saxifraga flagellaris |
Succulent rosettes spread by little red runners. One to a few yellow chalice flowers top stems with scale-like leaves. The entire plant is covered with sticky purple glandular hairs. |
4" x 2" |
SL, 70°F |
| Saxifraga kotschyi |
Found in north facing limestone crevices, encrusted buns and mats of beautiful, gray-green cushions. Yellow flowers drying bronze. Kabshia type. |
|
|
| Saxifraga longifolia |
Picture |
|
|
| Saxifraga luteoviridis |
One of the smaller "Engleria" saxifrages (recently lumped with another section as Porphyrion--but still distinctive). The very silvery rosettes spread rather slowly into a tiny hummock, and the chartreuse bubble-like bloom in the spring. Makes for one of the very most rewarding wild saxies to grow. |
4" x 3" |
SL, 70°F |
| Saxifraga marginata |
A classic alpine (Porophyllum) for northeast crevices. White flowers in heads over fabulous large buns. |
|
SL 70°F |
| Saxifraga odontoloma |
Clusters of toothed, round leaves support delicate spires of white flowers. Found in wet meadows of the Rockies. Picture |
8-24" tall |
SL, 70°F |
| Saxifraga oppositifolia |
The Alaskan phase of the purple saxifrage appears to be even more compact. The royal purple flowers are luscious. Picture |
2" x 8" |
SL, CS 4wks, 70°F |
| Saxifraga oppositifolia ssp. speciosa |
Mats of encrusted 'moss' with large rose purple nearly stemless flowers. A southern form, this often has 6 flower petals. |
|
OT or CS 4 wk, SL 70°F |
| Saxifraga oregana var. montanensis |
Leathery, flat lance leaf rosettes and elongated fluffy greenish-white flowers found in moist sites. |
18" x 8" |
SL, 70°F |
| Saxifraga paniculata |
The most widespread and variable of silver saxifrages from the Alps. This is a collection of several forms, including; minutissima, 'lutea', red shades, and tiny form-expect a lot of seed. Hybrids possible, even likely, and all are wonderful. |
8"x 10" |
SL, 70°F |
| Saxifraga paniculata (big) |
Vigorous grower with spires of ivory flowers in June. |
12" x 8" |
|
| Saxifraga paniculata (tiny form) |
The smallest taxon of this species we have, with cool white flowers in late may on only 3" stems. The rosettes approach 'Minutissima' in dinkiness. |
|
SL, 70°F |
| Saxifraga paniculata 'Millstream' (red) |
The silvery mounds of foliage produce airy wands of truly red flowers. Outstanding plant. |
8" x 8" |
SL, 70°F |
| Saxifraga paniculata 'Minutissima' |
Tiniest cultivar of the commonest silver saxifrage. |
1" x 3" |
SL, 70°F |
| Saxifraga porophylla ssp. federici-augustii |
Smaller silver-encrusted Engleria type for northeast fissures or in troughs. |
|
SL 70°F |
| Saxifraga porophylla ssp. grisebachii |
Stunning encrusted rosettes, purple red hairy stems carry purple-rose bell flowers in clusters. |
|
SL 70°F |
| Saxifraga rhomboidea |
Soft, fuzzy, white balls rise on reddish stems above a flat rosette of succulent, oval, scallop-edge leaves. Picture |
8" x 4" |
SL, 70°F |
| Saxifraga scardica |
Very silvery, encrusted rosettes with comparatively large white flowers in early spring. An especially heat tolerant Porophyllum for sunny dry gardens. |
4" x 4" |
SL 70°F |
| Saxifraga scleropoda |
Extremely compact cushions of dark green foliage are very hardy and more sun tolerant than most Porophyllum saxifrages. Masses of bright yellow flowers in April. A recent introduction from the Caucasus. |
3" x 5" |
SL, 70°F |
| Saxifraga sempervivum |
Very silvery, flat rosettes 1 cm in diameter, clump up to form a very decorative piece of coral in time. Purple velvet clad stems are very showy--more so than the cluster of purple flowers. Miniature form of an easy classic 'Engleria' type. |
|
SL 70°F |
| Saxifraga spruneri |
Tiny alpine from Greece, this Porophyllum thrives in a trough. White flowers. |
4" x 6" |
SL, 70°F |
| Saxifraga stribrnyi |
Fuzzy red stems of pendant burgundy-pink flowers spring from encrusted rosette mats. Picture |
3" x 5" |
SL, 70°F |
| Saxifraga tricuspidata |
Vigorous mat forming saxifrage with pale yellow or white stars over a long season. Trim rosettes formed by 3 fingered leaves. |
4" x 10" |
SL, 70°F |
| Scabiosa atropurpurea 'Crimson Shade' |
A glorious annual from Europe—this is a deep red phase that blooms much of the summer season over attractive tufts of leaves. |
14" x 8" |
JC, 70°F |
| Scabiosa columbaria 'Alpina' |
Desirable, tiny lavender pincushion flower from the European Alps. |
3" x 4" |
JC, 70°F |
| Scabiosa crenata cf. ssp. dallaportae |
Distinctive three-inch mat forming shrub with tiny divided leaves. The flowers are
cream-lilac on one inch stems. |
3" tall |
JC 70°F |
| Schivereckia podolica |
A dome of silvery leaves with neat spires of pure white in April that complement Iris pumila and early tulips. A rare Russian cousin to alyssum makes a neat mound in or out of bloom. Picture |
8"x6" |
D, 70°F |
| Schizonepeta multifida |
Deeply cleft foliage forms compact mounds, with candle-like spires of purple flowers all summer. Reputed to be biennial, this blooms and lives for us, and makes a wonderful dark spot among the silvers of the xeriscape. Intensely aromatic. |
12" x 8" |
|
| Sclerocactus parviflorus |
The largest single stem cactus of the cold American deserts can produce stems nearly two feet tall. The crown of purple flowers in late spring are spectacular: Needs heat, lime and perfect drainage to flourish--slow and attractive from seed (the best way to get hardy specimens). Rarely seen. Picture |
|
SL 85°F |
| Scorzonera sp. |
A remarkable dwarf cousin to Oyster Plant that has persisted and wandered around the Kelaidis' garden over the years, delighting with its passion-flower intensity of purple bloom. For lovers of the unconventional and recondite. |
5" x 7" |
JC, 70°F, L |
| Scutellaria alpina |
Lush, fresh green mounds complimented by short spikes of flowers with purple heads and white lips, all summer. Not a trough plant but a showy, tough plant, even in less than ideal conditions. |
8" x 12" |
JC 70°F |
| Scutellaria baicalensis |
Brilliant blue skullcaps on wand-like stems for much of the summer and autumn. Extremely hardy plant from central Asia--beautiful in a border. Color when much of your garden is "sleeping". Picture |
24"x12" |
JC, 70°F |
| Scutellaria indica var. parvifolia |
The loveliest little scullcap. Small, scalloped, round, fuzzy leaves display tiny flowers in orchid pink, purple or rarely white. Predominately orchid pink, which is a little more upright and hardier. |
3" x 5" |
JC, 70°F |
| Scutellaria orientalis |
Prostrate mat, incised green leaves with many clear yellow flowers. Some forms leaves with bronze edges, some flowers bronze. |
|
|
| Scutellaria orientalis ssp. pectinata |
Silver-white perfect buns of narrow scalloped leaves make this the best skullcap for the rock garden. Sessile spikes of dusky crimson flowers with yellow lower lips embellish the silver domes. Picture |
2" x 8" |
OT or CS 3 wk, 70°F |
| Scutellaria pontica |
Mats of fuzzy leaf rosettes reminiscent of tiny African violets bear short stems of tubular crimson-rose skullcaps. |
4" x 12" |
JC, 70°F |
| Scutellaria resinosa |
A superlative NON-stoloniferous native to the southern Great Plains. Very easy to suit in average rock garden conditions, or even the driest xeriscape: trim mound of foliage and dazzling blue flowers all season. Picture |
8" x 8" |
JC 70°F |
| Scutellaria salviifolia |
Yellow helmets on procumbent stems. Wonderful, wrinkled, fuzzy gray oval leaves. |
3" x 10" |
JC, 70°F |
| Scutellaria sp. |
|
|
|
| Scutellaria suffrutescens |
Excellent rock garden annual |
|
|
| Sedum cepaea |
Wonderful round, first year rosettes are trim and pleasant.These erupt into 8" towers of pale pink flowers that quite unlike most other sedums. Quite persistent once established. |
6" x 3" |
SL 70°F |
| Sedum dasyphyllum |
A distinct and beautiful selection of this widespread European species with narrower, bluer leaves and sparkling pink flowers. Never invasive like some sedums, this is a keeper. |
3" x 6" |
|
| Sedum kamtchaticum 'Variegatum' |
The typical form of this trim sedum is very fine, but this is seed from a selection splashed with yellow. Yellow bloom in summer—tolerating a wide variety of sites and soils and exposures. Never weedy. |
3" x 8" |
JC, 70°F |
| Sedum lanceolatum |
The universal stonecrop of the Rocky Mountains: small clumps of stubby leaves are deep olive in summer, turning deep purple in the winter months. Shining yellow star flowers in mid Spring. |
4" x 4" |
JC, 70°F, L |
| Sedum obtusatum |
Fleshy rosettes of powdery blue leaves blushing to red, cling to rocky cliffs and have yellow/red flowers. |
|
|
| Sedum oregonense |
Spidery mats of ghostly glaucous rosettes with pink highlights and stolons carpet mossy cliffs. |
|
3" x 15" |
| Sedum pachyclados |
A wonderful mound of deeply cut foliage, with ivory white flower in early summer. One of the very best rock garden sedums for ordinary rock garden culture. |
3" x 10" |
|
| Sedum pilosum |
Perfect, downy rosettes an inch across, with pearly pink blossoms on stems barely longer than this: true, this is a monocarpic plant, but it will self sow in troughs or the right spot in the garden. |
2" x 2" |
SL 70°F |
| Sedum populifolium |
Woody stalks support clusters of fleshy, deeply serrated leaves give the appearance of mini-trees, useful in troughs. Pink to white blooms in late summer. From Siberia. |
10" x 8" |
|
| Sedum rhodanthum (Clementsia rhodantha) |
Stems of succulent blue-green leaves crowned with beautiful warm-pink, rounded, multi-flowered heads. Entire plant turns glowing red in the fall. Picture |
12" x 10" |
JC, 70°F, L |
| Sedum roseum (Rhodiola rosea - Rhodiola integrifolia) |
Stems of succulent blue-green leaves crowned with dark maroon, flat-topped, multi-flowered heads. Wonderful red foliage in the fall. Picture |
8" x 12" |
JC, 70°F, L |
| Sedum tatarinowii |
Lovely symmetry in stems, intricately toothed leaves topped with foamy while flowers. August blooms! |
|
JC, 70°F, L |
| Sedum telephium |
A lush, clump forming sedum from Eurasia with orange yellow flowers in generous clusters. Easy and permanent. |
12" x 8" |
SL 70°F |
| Semiaquilegia ecalcarata |
From Nepal. Mounds of delicate, apple-green, fern-like leaflets with branched stems of burgundy spurless flowers. Picture |
15" x 8" |
CS 3w, 70°F |
| Sempervivum arachnoideum 'Album' |
Our other favorite semp, this has such heavily eyelashed, chartreuse rosettes that they appear almost as hairy and downy as the last. The flowers are a good, soft yellow--we like them! |
3" x 8" |
SL, 70°F |
| Sempervivum arachnoideum var. album |
Little succulent hens-and-chicks with intricate webbing between leaves. White flowers. |
|
SL, 70°F |
| Sempervivum ciliosum 'Mali Hat' |
Soft yellow, multipetalled star blooms over white-eyelashed rosettes. Along with S. arachnoideum, these are surely the loveliest hens-and-chicks. |
8" x 6" |
SL, 70°F |
| Sempervivum ciliosum ssp. borisii |
Our other favorite semp, this has such heavily eyelashed, chartreuse rosettes that they appear almost as hairy and downy as the last. The flowers are a good, soft yellow--we like them! |
8" x 8" |
|
| Sempervivum octopodes |
In the running as one of the weirdest hens and chicks. This easterly species produces beautiful, furry green rosettes that frequently send out foot long runners that do give the plant a distinctly octopoid look--especially striking grown in a wall. |
3" x 10" |
SL, 70°F |
| Senecio abrotanifolius |
Lacy mounds of dark green leaves, and a constant succession of bright yellow/orange flowers. |
10" x 10" |
|
| Senecio amplectens v. holmii |
Large, showy, light-yellow pendent daisies have maroon phyllaries and shiny, glabrous, jagged edged leaf tufts. Picture |
10" x 9" |
JC, 70°F, L |
| Senecio atratus |
Silver leafed. Large. Picture |
|
|
| Senecio canus |
Slender, few-flowered stems of golden yellow daisies top white flocked lanceolate basal tuffs. Picture |
5"x5" |
JC, 70°F |
| Senecio dimorphophyllus |
Sweeps of rich yellow flowers in seasonally wet meadows. Species name refers to the two types of leaves, round basal leaves and clasping, triangular stem leaves. |
10" x 6" |
|
| Senecio fendleri |
Silver leafed |
|
|
| Senecio flaccidus |
White flocked dissected long slender leaflets on multi-branched subshrub crowned with many splendid yellow flowers. |
|
JC, 70°F |
| Senecio fremontii var. blitoides |
Mounds of leafy stemswith rubbery, lobed and toothed leaves have teminal clusters of golden daisies. Picture |
12" x 8" |
D, 70°F |
| Senecio harbourii |
Toothed, fleshy leaves on stems up to 12 inch in clumps produce golden-yellow daisies in late summer. |
|
JC, 70°F |
| Senecio polyodon |
Glowing fuchsia 1" daisies wave on delicate branched stems above clumps of toothed, fuzzy, dark green, lance leaves. One of Panayoti's finds in South Africa |
|
|
| Senecio resedifolius |
Pygmy butterweed has large, flat, yellow flowers and tiny, round, succulent leaves with burgundy fall tint, from scree. Picture |
|
|
| Senecio soldanella |
Glorious, highest alpine with deep purple orbicular leaves. A scree dweller with nearly sessile golden suns. A challenge to grow, and harder to keep. Picture |
2" x 6" |
JC, OT |
| Senecio taraxacoides |
Fleshy, toothed basal, somewhat dandelion-like leaves, bear nodding yellow solitary flowers. High alpine. |
|
JC, 70°F |
| Senecio tridenticulatus (packera) |
Yellow Daisy, 3 teeth at the end of the leaf |
|
|
| Senecio werneriifolius |
Large orange yellow daisies, just above basal tufts of spatulate, leathery leaves. A delight to encounter on those late season hikes. Picture |
2.5" x 3" |
OT |
| Seseli gummiferum |
Waxy lacy mounds of succulent, blue-gray foliage are stunning in their own right. The second year tall wands of stark white umbels open with rosy tints last virtually all summer. Monocarpic on rich soils, it can be perennial on harsher, gravelly sites. The "Moon Carrot" has attracted much attention in recent years in the Denver area. |
30" x 15" |
|
| Shoshonea pulvinata |
Superb buns of tiny green pinnate leaves studded with yellow flower umbels, found growing in fine, chalky soil. Picture |
1" x 10" |
OT |
| Sibbaldia procumbens |
Lovely silvery hairy trifoliate leaf mats provide a fabulous backdrop for showy flowers of other plants. Check our picture on the website of Cyananthus microphyllus for sibbaldia at its best. Has squinty, yellow-green flowers (is that the bloom?) but much showier red seedpods. This tundra dweller in the rose family grows well and true to form in the garden. Picture |
3" x 10" |
SL, 70°F |
| Silene acaulis |
High alpine mountain pink. Grows to become a robust mat of tiny succulent leaves with bright pink stars in summer. In the Rockey Mountains, this alpine star always catches the hikers eye. Cute! Picture |
1" x 5" |
JC, 70F |
| Silene argaea |
Choice caespitose alpine. Extremely lovely rose to red solitary blossoms over tight tufts of tiny, hairy leaves. This Turkish alpine is a delight with its long season of bloom, ease of culture and longevity. Picture |
4" x 8" |
L 70°F |
| Silene bolanthoides |
Fantastic new introduction: green pulvinate buns with many deeply bilobed white or rose sessile flowers |
|
L 70°F |
| Silene brevicaulis |
Charming saxatile plant. Pink flowers on pale green tufts. A new introduction. |
4" x 2" |
|
| Silene caryophylloides ssp. echinus |
Light green hedgehog-like buns of narrow, spiny leaves yield pinkish purple flowers. From poor, mineral soil, yet easy in cultivation. |
6" x 20" |
SL, 70°F |
| Silene caryophylloides ssp. echinus |
Compact tufts of spiny, sticky, pale green leaf rosettes yield magenta pink flowers on 3 inch stems. Full sun and mineral soil |
|
SL 70°F |
| Silene falcata |
Very fine, dark green foliage forms a very dense and attractive bun. 3" large white flowers, on 3" stems, open in the evening. Calyx purple in fruit. Another superlative Turkish catchfly. |
4"x 6" |
JC, 70°F |
| Silene fenzilii |
Picture |
|
|
| Silene oreades |
Dense emerald green caespitose alpine with linear leaves and many white (rose outside) flowers on short stems. New introduction from cooler alpine level. |
3" x 5" |
L 70°F |
| Silene petersonii |
Huge, slightly nodding spidery pink flowers produced on and off all summer over a slowly spreading mat of sticky foliage. This very local alpine from the central Utah Rockies is surely one of America’s most beautiful little-known alpines. We find it very easy to grow in a sunny scree. |
6" x 7" |
JC, 70°F |
| Silene sp. |
Compact, dark-green mats with two-inch stems of white flowers which have purple spots on reverse side of petals. From limestone crevices. |
|
L 70°F |
| Silene sp. aff. pharnacifolia |
Grey-green mats with bright pink flowers on wiry stems. |
up to 2" high |
|
| Sisyrinchium macrocarpum |
Large, rich yellow flowers with brown centers and leaves like a small iris. An ideal diminutive vertical element in the rock garden. Picture |
6" x 5" |
OT |
| Sisyrinchium montanum |
Pale blue to violet star flowers amidst grassy leaf clumps. |
12" x 10" |
OT |
| Sisyrinchium patagonicum |
Clumps of narrow glaucous leaves, similar to a small species iris, with 8" spikes of yellow flowers, veined in brown. |
8" x 5" |
OT |
| Smelowskia calycina |
Silver fern-like foliage complements loose umbels of snowy flowers and tiny upright burgundy pea pods. Picture |
5" x 4" |
JC, 70°F |
| Soldanella pindicola |
A rare, narrow endemic. Lilac fringed bells over clumps of thick, round leaves which are one inch in diameter. Found in serpentine strata at the edge of streams. |
4" x 4" |
JC 70°F |
| Solidago multiradiata |
Miniature, spring blooming golden rod makes for a restrained alpine with refined habit. Still yellow, though. |
5" x 8" |
JC, OT |
| Solidago spathulata var. nana |
Brassy yellow clusters over dark green leathery leaf tufts. An excellent performer for the front of the border or rock garden, blooms early summer. |
5" x 6" |
JC 70°F L |
| Sorbus scopulina |
Similar to the familiar European Mountain Ash (S. aucuparia) but a smaller tree or clumping shrub with slender, less formal habit. Leaflets are larger with good fall color and red-orange berry clusters. Picture |
10-15' |
W 2wks,CS 14-16wks |
| Sphaeralcea ambigua |
Large salmon flowered, xeric hollyhock. Gorgeous silver maple-shaped leaves to 18 inches. Found in a harsh Utah basin. |
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JC, 70°F |
| Sphaeralcea caespitosa |
The smallest mounds, the most luminous red-orange chalices and neatest habit of any American mallow--difficult and enchanting. No overhead watering, for the dry well-drained garden. Picture |
3"x6" |
JC, CS 3w, 70°F or OT |
| Sphaeralcea coccinea |
Coral open flowers on plants like miniature silver hollyhocks to 5 inches. |
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JC, 70°F |
| Sphaeralcea sp. |
A compact, mounding cowboy's delight. Picture |
10"x8" |
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| Sphaeromeria capitata |
Dense silver mats like divided-leaf pussytoes are dotted with golden lollipop flowers. |
5" x 12" |
SL, 70°F |
| Spiranthes romanzoffiana |
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| Spraguea umbellata |
Decumbent strawberry clusters emerge from succulent rosettes. Xeric. |
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JC, 70°F |
| Stachys coccinea |
A very showy native perennial from the American Southwest forming deep green mounds of foliage covered for much of the summer with very showy scarlet trumpet flowers that are irresistible to hummingbirds. This has surprised us with its hardiness in the last few admittedly very mild winters, zone 6? |
16" x 18" |
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| Stachys iva |
Fleecy white mounds of foliage produce 8-inch spikes of white flowers all summer. Picture |
|
D, 70°F |
| Stachys minor |
Hot, magenta pokers over wonderful, slow spreading mats of dark green leaves. For ordinary loam or scree in sun. |
10" x 5" |
D 70°F |
| Stachys monieri |
Picture |
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| Stachys monieri ex 'Sahara Pink' |
Petite stems bearing whorls of clear pink blossoms from dense clumps of scallop edge, soft green leaves. Blooms summer though fall. Picture |
10" x 12" |
OT |
| Stachys nivea |
Huge white helmets over gorgeous rosettes of lance-shape, scallop-edge leaves that have a frosted appearance. Worthy of growing without the blossoms, but with a little extra moisture, they are an surprise bonus. Prefers clay soil. |
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OT |
| Stachys thirkei |
Picture |
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| Stanleya pinnata |
Depending on moisture, this widespread dryland Crucifer of the Western United States resembles a yellow Eremurus in full bloom. Generally restricted to Selenium rich soils in nature, but it is not fussy in the garden. Needs sun and drainage to thrive. |
24-40" |
JC, 70°F |
| Stellaria americana |
Loose rambling stems of soft green leaves bear white star flowers. Found at the base of limestone cliffs. |
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| Stenotus acaulis (Haplopappus) |
Attractive dark evergreen tufts that form mats with an abundance of bright yellow flowers. A proven performer for exposed sites. Picture |
3" x 5" |
JC, 70°F |
| Stenotus armerioides var. armerioides |
Multi-stemmed tufts of few petal yellow daisies with raised narrow center discs and long linear olive green basal leaf clumps. Chalky badlands habitat. Picture |
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| Stomatium beaufortense |
Cushions of chubby, succulent, prominently toothed leaves yield orange-yellow spidery, multipetaled flowers. Surprisingly happy here. |
2" x 8" |
SL, 70°F |
| Stomatium mustellinum |
The highest altitude Stomatium, this has cool yellow shaving brush flowers all summer in cultivation. Very hardy ice plant. |
2" x 6" |
SL, 70°F |
| Stomatium resedolens |
From South Africa. Night blooming ice plant with rubbery rosettes that are deeply incised--reminiscent of the closely related Faucarias. Flowers smell like Juicy Fruit gum--believe it or not. Very hardy. |
2" x 10 " |
SL, 70°F |
| Stomatium sp. |
An undetermined species from a huge family of South African succulents, similar to 'tiger jaws', this one has night-blooming flowers that look like shaving brushes. Very exotic. |
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SL, 70°F |
| Streptanthus cordatus |
Picture |
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| Streptopus amplexicaulis |
Willowy cousin to Solomon’s seal, the twisted stalk has similar, pink blossoms under each leaf joint that produce marble sized watermelon flavored berries. Moist woodland soil. |
36" x 15" |
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| Stylophorum diphyllum |
This local woodlander from limestone woods in the Midwest produces a long succession of crepe-textured yellow flowers up to 3" across. 15 inches by 12 inches. |
|
JC, OT |
| Styrax officinalis |
Shrub from moist chaparral conditions. White "A-line wedding dress" pendent flowers with thin textured oval leaves. |
4-6' |
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| Sutera breviflora |
This abundant clump or mat former from the Drakensberg Mountains of South Africa appears to be perennial in the wild. It has thus far been annual in Denver, but reseeds and blooms for a very long season—red faced flowers rather like a mimulus in shape. |
3" x 10" |
JC, 70°F |
| Sutera halimifolia |
Rich blue purple flowers for a very long season: this has likewise performed as an annual in the garden. |
10" x 5" |
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| Swertia albomarginata |
Surely, one of the most amazing native plants: a desert gentian from the San Rafael Swell that makes a waxy basal rosette ridiculously like a striped hosta, only in full sun among cacti and sagebrush! The flowers are near white--very pretty. 10 inches by 8 inches. Sure to be a challenge to grow. |
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| Swertia perennis |
This gentian relative has plum-purple star flowers with pronounced stamens, topping stems of glossy leaves. Needs a damp site. Picture |
10" x 6" |
SL 70°F or OT |
| Symphyandra wanneri |
Dense bushy biennial full of narrow purple bells all summer. Picture |
12" x 12" |
JC 70°F |
| Symphyandra wanneri var. alba |
Many white hanging thimbles bedeck bushy clumps of coarsely hirsute plants. Eastern alps from Romania. |
9" x 10" |
JC, 70°F |
| Synthyris missurica var. magna |
Leathery leaves like Galax, spikes of bright blue flowers in early spring. Shady rock garden. Tetraploid native plant rare in cultivation. Picture |
|
JC, OT or JC, CS 4wks, 70°F |
| Synthyris pinnatifida |
Deep blue flower clusters resembling kitten tails of an upset kitty; florets stand out in all directions on short, dense spikes over thick powdery- blue, dissected ferny leaves. Blooms in early spring. |
6" x 4" |
CS 3w, 70°F |