Often fewer than three flowers occur on a stem. Distinguished from other species by its broad, heart or kidney shaped leaves, and, in spring, by its bright yellow blossoms. By dividing root clumps, before flowers appear in early spring or when plants are dormant in summer. By seed sown in early summer, as soon as it is ripe. Seed-grown plants tend not bloom until second year.
Entire plant dies to the ground by midsummer.
Good for stream banks, shallow pond margins, and wet bog gardens. Cultivars include variety 'Alba', with white flowers variety 'Plena', with large double flowers Cultivars and species available by mail order from specialty suppliers or at local nurseries stocking plants for water gardening.