Full to partial shade. Heart-shaped flowers hanging off a short stalk. Named for the many yellow spherical tubers on the root, which resemble kernels of corn. All parts of the plant contain poisonous alkaloids, but there is no danger in smelling the strong fragrance of the flowers, which is reminiscent of hyacinths. Soil needs rich organic content, average moisture.
Leaves die back in summer.
Easy to grow and will spread. Divide tubers in late spring to summer to propagate. Full to partial shade. The flowers, in spite of the botanical name, are not in an umbel but in a raceme. The lower flower-stalks are much longer than the upper, so that a somewhat flat inflorescence is formed.