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botanical name:
Epimedium grandiflorum ssp. koreanum
Epimedium grandiflorum ssp. koreanum © Deeproot Plant Base
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common name:  Bishop's Hat, Barrenwort, Fairy Wings, Horny Goat Weed, Yin Yang Huo
synonyms:  Epimedium grandiflorum f. flavescens, Epimedium koreanum
family:  Berberidaceae
characteristics: perennial, semi-evergreen, ground-cover
height: 0.25m
width: 0.25m
growth rate: medium
growth habit: mounding
leaf colour: purple & green
flower colour: yellow
main season: Spring
medicinal symbol medicinal
aspect: part shade, shade
conditions: dry soil, moist soil
preferred soil pH: neutral-acid
minimum temp: -15°C
USDA zone: 5 to 9
Clump forming, rhizomatous deciduous perennial. Purple tinted young leaves and relatively large pale yellow flowers.

Likes a woodland type situation. Best in fertile, humus-rich, moist but well drained soil and partial shade. Benefits from occasional mulching with leaf-mould or similar. Remove old leaves in late winter before new growth starts.

By division.

Used as a medicinal herb to treat impotence and increase sexual libido in both men and women. First used in traditional Chinese medicine. Also reputed to slow the ageing process.

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