Visit Tohono Chul’s Fall Plant Sale to see our extensive offering of usual and unusual, native and arid-adapted plants. Members’ Preview: Wednesday, October 14, 12 p.m. – 6 p.m. General public: Saturday, October 17, 9 a.m. – 5 p.m. General public: Sunday, October 18, 10 a.m. – 4 p.m.