barrenwort 'Queen Esta'

'Queen Esta' is a clump-forming, rhizomatous perennial 30cm high, with deciduous, pinnate leaves, 30cm long, formed of usually nine ovate to heart-shaped, spiny-edged leaflets which open purple and mature to mid-green, and deep pink buds which open to large flowers, of deep pink sepals and pale pink petals with long white spurs, in spring; Epimedium leaves may be used for their nests by leaf-cutting bees