The Barrel Cactus is one of the most recognizable cacti of the Sonoran and Mojave Deserts, its cylindrical form often tilting slightly south or southwest — giving it the folk name 'compass cactus.' The tilt maximizes sun exposure in winter while reducing heat absorption in summer. Contrary to popular belief, the pulp contains oxalic acid and is not a reliable source of drinking water. The bright red or yellow flowers ring the top of the plant and attract bees and birds. Aged barrel cacti provide important seed caches for Cactus Wrens.
Best time to see a Barrel Cactus
The best time to see a Barrel Cactus is January–April, when about 63% of U.S. sightings happen, based on 33,645 research-grade iNaturalist observations.
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