$17.95; $16.95 (ages 62+ and students with ID); $11.95 (ages 2-18). An additional fee is charged for some guided tours.
Grounds daily 9:30-5 (also Fri. 5-10). Extended evening hours during the winter flower show late Nov.-late Dec.; phone ahead. Butterfly exhibit open late Apr.-Labor Day. Phone ahead for tour times. Allow 1 hour minimum.