Frances Williams is a large-leafed hosta growing to 18 inches high and 36 inches across. The heart-shaped leaves grow to the size of a salad plate. They have a greenish-yellow marginal variegation and are borne on 12-inch long petioles that emerge from the slow growing crown. The leaf is glaucous with the blade conspicuously corrugated, giving the plant a quilted look. Whitish bell shaped flowers appear in early summer on leafy stalks that are just taller than the foliage.

Hostas are members of the lily family.