Genus of plants of north-east Asia cultivated for its ornamental foliage (5)
I believe the answer is:
hosta
(Other definitions for hosta that I've seen before include "Plant that likes shade" , "Ornamental foliage plant; as hot (anag.)" , "Plant grown for foliage" , "Athos (anag) - perennial plant" , "found in a bed, perhaps" .)