Stenocereus gatesii. Full sun, Recommended Temperature Zone: USDA: 9b-11 Growth Habits: Tree like cactus, up to 15 feet tall, Slender stems up to 3 + inches in diameter when mature; reddish central spines. Frost tolerates down to 26 deg. F. for short durations. Full sun Origin: Coastal Venezuela and islands nearby, introduced into Mexico.