Desert

Los Angeles County is home to parts of two major desert regions: the Mojave Desert and the Colorado Desert.

Mojave Desert
The Mojave Desert is primarily located in the northeastern part of Los Angeles County, extending into areas like the Antelope Valley. This desert is characterized by its high elevation, ranging from 2,000 to 4,000 feet above sea level, and features unique flora such as the Joshua Tree (Yucca brevifolia), creosote bush, and blackbrush. The Mojave Desert receives between 3 to 10 inches of rainfall annually and is known for its stark landscapes and diverse wildlife.

Colorado Desert
The Colorado Desert, a part of the larger Sonoran Desert, occupies the southeastern portion of Los Angeles County. This area is generally lower in elevation, with some regions dropping below sea level. It receives less rainfall than the Mojave, averaging 2 to 6 inches per year, and is home to vegetation like saguaro cacti and Sonoran creosote bush. The Colorado Desert is also notable for its agricultural valleys, such as the Coachella Valley.

High Desert
In addition to these major deserts, Los Angeles County includes regions referred to as the High Desert, which encompasses areas like Victorville and Palmdale. This region has a distinct climate compared to the Low Desert areas, with cooler temperatures and different vegetation due to its higher elevation.

While some might colloquially refer to Los Angeles itself as a desert due to its dry climate, it actually has a Mediterranean climate characterized by hot, dry summers and mild, wet winters. The true desert environments are found in the surrounding areas mentioned above.