FAMILY :: SCROPHULARIACEAE
YELLOW FOXGLOVE: This is the major commercial source of the drug digitalis, a glycoside which acts to increase the output of heart muscle in congestive heart failure. It has light yellow to cream colored flowers on a plant somewhat smaller (3-5′ tall) than the common foxglove D. purpurea. Hardy perennial grown in full or part shade. Dormant in winter. Dangerous to use without knowledge or experience.