Tues.-Fri. 10-5, Sat.-Sun. 1-5. Guided tours are offered Tues.-Fri.; reservations are required. A stroller tour is given the first Fri. of the month at 10. Gardens open daily 7-7, during DST; 7-5, rest of year. Closed Jan. 1, Easter, July 4, Thanksgiving and Christmas. Allow 1 hour, 30 minutes minimum.