These epimediums are especially tolerant of cold weather.
Epimedium brevicornu
Epimedium brevicornu (Several clones/Cc. numbers)
A beautiful hardy, deciduous species native to the northern regions in China where Epimediums are not normally found. These are divisions from plants collected during Darrell’s 2001 expedition to Henan Province where no Epimediums had been previously recorded. Produces an 8 to 10” high mass of small, rather round, heart-shaped leaflets. Numerous 10” long spikes carry “clouds” of small, star-shaped white flowers, each with short, reflexed spurs with a hint of yellow in the center. New leaflets may be speckled with reddish-purple and are thin and reminiscent of parchment paper to the touch. Hardy to Zone 4 and perhaps even 3! Early and long blooming, sometime for up to a month! $22
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Epimedium fargesii
Epimedium fargesii (Several clones/Cc. numbers)
The typical forms of a very choice species and the main target of Darrell’s November 2000 collecting trip to China. He gathered small divisions from a variety of plants at seven locations. 12-18” tall in bloom, with narrow, medium-sized arrow-shaped, dark evergreen leaflets, that persist in the winter garden.
The medium-sized flowers typically have long, white/pale lavender inner-sepals that wrap around smaller, lavender spurs. Often both reflex backwards. Foliage exhibits dark maroon flecking in spring and sometimes fall. First flush 8-10", second growth flush to 15".
Epimedium grandiflorum f. flavescens #2
E. grandiflorum f. flavescens #2 (Cc. 940550)
Of the over 50 distinct clones of E. grandiflorum f. flavescens that Darrell brought back from Japan, this is by far the earliest to bloom with large, pale greenish-yellow flowers held below large, elliptical, bright apple green leaflets. Large, mature leaflets etched by the nearly parallel main veins make a bold, elegant garden statement. From the Kyoto Botanic Garden in Japan, it is very different from other clones circulating in the U.S. 20" tall. Clear yellow fall foliage. Spreads by 2-4" rhizomes.
Epimedium grandiflorum f. flavescens #3
Epimedium grandiflorum f. flavescens #3 (Cc. 950129)
Originally sold by Siskiyou Rare Plant Nursery under the invalid name E. macranthum ‘Aureum’. At 14”, it is shorter than most other E. grandiflorum f. flavescens clones offered here. Beautiful red-copper young leaflets unfurl over large, pale yellow flowers. After bloom, large, bold, oval-shaped leaflets expand to form an impressive mound. Clear yellow fall foliage color. Spreads by 2-4" rhizomes.
Epimedium grandiflorum f. flavescens #5
E. grandiflorum f. flavescens #5 (Cc. 970232)
Reminiscent of E. koreanum ‘Harold Epstein’, with large soft yellow flowers and huge rounded leaflets, nearly as broad as long. However, its spreading rhizomes only grow 2-6” per year, forming a much thicker mass in the garden. Large, light yellow flowers held below the emerging foliage. 20” tall. Rusty red fall color.
Epimedium grandiflorum f . flavescens #6
Epimedium grandiflorum f. flavescens #6
Cc. 950188
Distinctive for the exaggerated extra points on each terminal leaflet. In spring, the large leaflets have a thin dark bronze edging with an overall light bronze blush. The smooth leaf surface and very delicate spring coloration creates a soft effect. Sizeable clusters of large, showy, pale yellow flowers are borne on long sprays beneath the leaves as they unfurl. 16” in bloom, to 20” tall. Spreads 2-4" per year.
Epimedium grandiflorum forma flavescens "Aomori Forms"
E. g. f. flavescens “Aomori Forms” (Several clones/Cc. #)
Prof. Stearn’s 1938 Epimedium monograph mentions “Faurie’s robust specimens from Aomori in Honshu, Japan”. Darrell explored the region in 1997. After several inquiries, their host led them to a steep hillside of densely planted Cryptomeria japonica, beneath which grew knee-high Epimediums with leaflets the size of your hand! Spring leaflets often flushed bronze-purple on 15-24” stems. Large, light yellow flowers open beneath the unfurling leaves. Rhizomes spread 2-4” a year, creating massive clumps over time.
Epimedium grandiflorum f. flavescens 'Chocolate Lace'
E. grandiflorum f. flavescens ‘Chocolate Lace’ (Cc. 980200)
***2003 Cobblewood Introduction***
Yummy, milk-chocolate tones on the emerging spring leaflets later melt into a rich burgundy tracing over a green backdrop with deep purple edges, before they mature to green. Large creamy, yellow-green flowers are held below the foli
Epimedium grandiflorum f. flavescens 'LaRocaille'
Epimedium grandiflorum f. flavescens ‘La Rocaille’ (Cc. 950040)
Originally offered in the 1970’s as E. grandiflorum f. flavescens by George Schenk of The Wild Garden, Bothel, WA. Plants established in Harold’s garden 25 years before grew into a large mass 6’ across. Its vigorous habit, long arrow-shaped leaflets and large, pale yellow flowers moved Harold to name it after his garden. Foliage is flushed a beautiful red in spring. 14” tall.
Epimedium grandiflorum var. coelestre 'Alpine Beauty'
E. grandiflorum var. coelestre ‘Alpine Beauty’ (Cc. 950058)
***2000 Cobblewood Introduction***
Extremely rare in the wild and in cultivation, this is the only Epimedium that grows at montaine heights. Beauti
Epimedium ilicifolium
Epimedium ilicifolium (Several clones/Cc. numbers)
A particularly cold-hardy, Chinese evergreen species from Shaanxi Province. Darrell found it in three areas in Nov. 2000 at the highest elevation above snowline. He trudged up steep ravines through snow and freezing temps just to see it in the wild. The long, narrow, evergreen leaflets are especially spiny (ilici-=holly, folium=leaf), on stems to 10”. Large flowers with light green inner sepals and bright yellow spurs, on stems to 18”.
Epimedium koreanum 'Harold Epstein'
Epimedium koreanum ‘Harold Epstein’ (Cc. 930004)
A very cold hardy clone with huge flowers for an Epimedium— gorgeous and butter yellow. Named in honor of Harold Epstein by plantsman Jerry Flintoff, its enormous leaflets can reach over 6” long and 4-1/2" wide. Spreads 6-12" a year. It usually takes 2-3 years to establish itself and become most impressive. The flowers emerge before the leaflets unfurl in early spring. E. koreanum is notorious for just putting up one set of leaves per node each season. If the leaf suffers damage, the rhizome will remain dormant until the following year. ‘Harold’ is a great bold-textured vigorous ground cover for large areas where it can spread unimpeded. It is especially useful in combination with early spring bulbs for sequential bloom. After bloom the expanding leaves serve as camouflage for the dying bulb foliage. 15" tall.
Epimedium lishihchenii
Epimedium lishihchenii (Several clones/Cc. numbers)
Collected by NACPEC in 1994 in Hubei Province, China, along with E. stellulatum. Produces large, bold evergreen leaflets that are heavy in substance. One of the few evergreen epimediums where the foliage makes it through many of our harsh winters. The large flowers have green inner-sepals and bright yellow spurs. Hardy to at least Zone 4. Grows to 12” tall. May exhibit various pastel shades in its spring foliage color. Fall color on some clones displays reddish markings on the leaves, as in accompanying photo.
Epimedium macrosepalum
E. macrosepalum (Several clones/Cc. numbers)
An evergreen and drought-tolerant species from the S.E. coastal region of Russia. The flower of this species makes up for its paucity of flowers with their size. The flowers have enormous (for an Epimedium) inner sepals that are a heavenly shade of lavender-pink. Unlike most inner sepals that follow the curve of the spurs, these petaloid structures reflex back like huge rounded wings, arching above the down curving spurs, like an insect taking flight. Both the cup and the tips of the spurs fade to white. Ground hugging foliage 4-8” high is composed of small to medium-sized rounded, heart-shaped leaflets that turn deep maroon over winter. Its low, running habit makes this species a good groundcover. Vigorously spreads by thin 4-12” rhizomes.
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Epimedium macrosepalum 'Sweet Rachel'
Epimedium macrosepalum ‘Sweet Rachel’ (Cc. 040102)
***2010 Cobblewood Introduction***
This beautiful, smaller foliaged form has very shiny, bright burgundy leaves in winter if grown in some sun. The ground-hugging, heart-shaped leaves have the texture of the finest leather. Same beautiful, large rose pink flowers as the species and a reliable bloomer, but with very few flowers. Spreads by thin rhizomes which grow from 4-12”a year. From a plant collecting trip Darrell sponsored in cooperation with the U.S. National Arboretum. Drought-tolerant. Evergreen.
Epimedium stellulatum "Narrow Leaf Forms"
Epimedium stellulatum “Narrow Leaf Forms” (Sev. clones/Cc. #)
NACPEC (North American China Plant Exploration Consortium), is a group of ten botanic gardens and arboreta from across the U.S. and Canada, organized by the National Arboretum to explore areas of China on an annual or semi-annual basis. NACPEC has made several exciting discoveries, including this group of Epimedium stellulatum.
Discovered in several areas in the Qin Ling Shan of Shaanxi Province in 1996, the evergreen leaflets are medium in size, narrower than the original form and have especially spiny margins. 12-18”. The flowers are small white “stars” with tiny yellow petals on long, erect stems held well above the leaves. The floral display is like a miniature constellation suspended above spiny evergreen foliage. Early flowering and long-blooming, 12-18” tall. Hardy to Zone 4, possibly 3.
Epimedium stellulatum 'Wudang Star'
Epimedium stellulatum ‘Wudang Star’ L1193 (Cc. 960139)
Collected in the Wudang-Shan by Roy Lancaster, this clone was the original collection used to describe the species. Plants produce numerous sprays of small, starry-white flowers with minute yellow spurs over spiny, evergreen foliage. The faded maroon-flecked spring leaflets of this clone are much wider and rounded than those of the straight species. 12-18”.
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Epimedium sutchuenense
Epimedium sutchuenense (Several clones/Cc. Numbers)
This new Chinese species is from the mountains of southern Shaanxi and northwest Hubei Provinces where it blankets the slopes at approximately 6,000’ elevation. Superficially it resembles E. leptorrhizum, with large, lavender-mauve flowers. Spreads by long, thin 8-12" rhizomes. It produces two leaves on every flower stem, each with three medium-sized, smooth-faced leaflets. Uniformly short at less than 4” tall, it makes an excellent, low, evergreen ground cover.
Epimedium x perralchicum
Epimedium x perralchicum
(Several clones/Cc. numbers)
Long confused in the U.S. as its parent, E. perralderianum, (the other being E. pinnatum ssp. colchicum). The floral differences are minor, but the hybrid is more vigorous and hardier, to USDA Zone 4. Large, evergreen leaflets have slightly wavy margins. Like its parents, the leafless stems have small rich yellow flowers reminiscent of Verbascum. Spreads by 4-6” long rhizomes. Leaves form a thick mass 8-10” high. An excellent drought-tolerant groundcover that remains exceptionally evergreen through our harsh New England winters.
Epimedium x perralchicum 'Wisley'
Epimedium x perralchicum ‘Wisley’ (Cc. 960041)
A spontaneous hybrid discovered at the Royal Horticultural Society Garden at Wisley, England. Small, bright canary-yellow flowers are produced just above the newly emerging spring foliage to 10”. Medium to large leaflets are dark green with lighter veins and a delicate ruffled edge. The surface of each leaflet is shiny and "puffed" up between the veins, giving it a lustrous, faceted appearance that catches the light. Spreads by 4-6" rhizomes. A great drought-tolerant ground cover with exceptional evergreen leaflets that hold up through most of our harsh New England winters.
Iris tectorum 'Slippery Slope'
Iris tectorum ‘Slippery Slope’
***2010 Cobblewood Introduction***
Darrell has failed endless times growing the Japanese roof iris in our climate. The flower buds die over winter, starting a rot that eventually kills the plant. He collected this much hardier clone at a high elevation in the Dabashan region of southern Shaanxi Province, China. Here they were pulled up and over the icy mountain by a coal truck in Nov. 2000, hence the cultivar name.
This clone thrives in half sun on an exposed stony ridge in my garden. Best with sharp drainage in light shade/part sun. Large 4” violet blossoms emerge in late spring from 2’ × 2’ bright green foliage fans, giving a tropical appearance to an otherwise New England perennial garden. Spreads slowly, 2-5". per year, by fleshy rhizomes to form a massive clump over time, so give it some elbow room! Needs division every 3-4 years for maximum vigor.
