Genus: Barrenwort

Epimedium

Photo/Illustration: 
C. Colston Burrell
Barrenwort (Epimedium)
ep-ih-MEE-dee-um
Berberidaceae
The genus Epimedium is characterized by 4-petaled flowers hanging in clusters in shades of yellow, beige, pink, lavender, purple, red, or white, borne in racemes from spring to early summer. New leaves emerge with bronzy pink edges before turning green in summer. There are evergreen and deciduous species.
Noteworthy characteristics:  Epimedium ranges from the Mediterranean to temperate East Asia, occurring in woodland, scrub, and shady, rocky places. Mainly basal, 2- or 3-ternate, sometimes pinnate leaves with leathery texture. Heart- or lance-shaped leaflets.
Care:  Thrives in full to partial shade with rich, well-drained soil but will grow well (although slower) in dry conditions.
Propagation: 

Divide in autumn or after flowering. Root rhizome cuttings under glass in winter; plant out after danger of frost has passed.

Problems: 

Vine weevil and mosaic virus.

Species, varieties and clutivars for genus Epimedium

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Longspur barrenwort
Epimedium grandiflorum cvs.
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Epimedium stellulatum 'Wudang Star'
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Red epimedium, red barrenwort, bishop's hat
Epimedium × rubrum