Admission is free to the Tucson Botanical Gardens and Tohono Chul Park on Friday, May 11. Tucson Botanical Gardens, 2150 N. Alvernon Way, 326-9686, ext. 10; 8:30 a.m. to 4:30 p.m. Tohono Chul Park, 7366 N. Paseo del Norte, 742-6455; 8 a.m. to 5 p.m. Visit
tucsonbotanical.org or
tohonochulpark/wordpress/ for more information.