Learn about bats and other creatures of the night at Greynolds Park. 7:30 p.m. Greynolds Park, 17530 W. Dixie Highway. RSVP required. $5. Details: (305) 948-2891.
Fairchild Tropical Botanic Garden hosts the aroid plant show. 9:30 a.m.-4:30 p.m. at 10901 Old Cutler Rd., Coral Gables. Through Sunday. $10-$20. Details: (305) 667-1651. FAMILY DAY
Family Fun Day at Arch Creek Park features a nature walk, archaeological digs, and more. 1-3 p.m. Meet at 1855 NE 135th St., North Miami. RSVP required. $5. Details: (305) 944-6111. LEUKEMIA WALK
The Leukemia and Lymphoma Society presents Light the Night Walk, a nationwide event to raise funds for research and patient services. 6-9 p.m. at Bayfront Park, 301 North Biscayne Blvd., Miami. RSVP required. Details: (305) 937-7444 or www.lightthenight.org.