Death Valley annual average of rainfall is about 1.9 inches. In general, heavy rains in late October with no more rain through the winter months, as well as rains that are evenly-spaced throughout the winter and into the spring.
The Mojave Desert is rich with cacti and succulent species. Cactus grow from an elevation of 400 feet above sea level to the summits of the surrounding mountains.
The cactus species most commonly seen are cottontop barrel, silver cholla, and beavertail cactus. Engelmann hedgehog cactus are locally abundant above 3000 feet elevation. Grizzly bear pricklypear is the most common species in the pinyon-juniper woodlands.