This giant hosta is the largest of the blue plaintain lilies as each leaf can grow up to 40cm 40139 43441 long hosta 39blue angel39 is a slow growing hardy perennial that gradually forms into a structural clump consisting of luscious grey45blue giant leaves which form a great backdrop for the white flowers in june hosta 39blue angel39 has the coveted rhs agm 40award of garden merit41 and it is a great choice for damp shady corners of the garden height 90cm