Categories Perennials | yellow & orange flowers | Epimedium pinnatum Epimedium pinnatum Common name(s): Barrenwort, Horny Goat Weed, Rowdy Lamb Herb and others Synonyme(s): N/A Family: Berberidaceae Origin: Iran, Azerbaijan More infos: USDA zone 5 Related plants:Barberry Berberis julianae Berberis thunbergii “Atropurpurea” Berberis thunbergii “Atropurpurea” ‘Golden Ring’ Berberis thunbergii “Rose Glow” Berberis × frikartii Heavenly Bamboo Mahonia aquifolium Mahonia × media Nandina domestica Oregon Grape Oregon Grape (hybrid)