Hosta are clump-forming herbaceous perennials with simple, ovate or lance-shaped leaves, often attractively coloured or variegated, and erect racemes of nodding, funnel or bell-shaped flowers in early summer
'Sum and Substance' is a perennial making a clump of broadly heart-shaped, bright, shining yellow-green leaves to 50cm in length. Dense racemes of pale lilac, bell-shaped flowers on stems to 75cm