Annual Orchid Show features 800 blooming orchids in lush, tropical display infused with an eclectic mix of Mayan-themed accents. The Missouri Botanical Garden maintains one of the world’s premier orchid collections. The Orchid Show is the only time of year when a vast, rotating selection of orchids from the Garden’s historic collection is available for public viewing. Open Mondays through Fridays from 9 a.m. to 3 p.m. (last weekday entry at 2 p.m.); open Saturdays and Sundays from 9 a.m. to 5 p.m. Orthwein Floral Display Hall, lower level of the Ridgway Visitor Center. Garden admission plus $5; free for Garden members.