It is found on rocky slopes where cactus, creosote bush. They are especially attracted to the yellow flowers of the creosote bush. The vegetation consists mostly of black sagebrush and creosote bush. The native vegetation is dominated by high and low desert shrubs such as creosote bush. King Clone is thought to be the oldest creosote bush ring in the Mojave Desert. Nordihydroguaiaretic acid (NDGA) is an antioxidant compound found in the creosote bush ("Larrea tridentata"). The Colorado Desert hosts saguaro cactus, Sonoran creosote bush, and Salton Sea saltbush. Creosote bush stands tend to display an evenly spaced distribution of plants. Vegetation is dominated by the creosote bush ("Larrea tridentata"), which is widespread. Some shrubs it was found eating of off was the cholla, creosote bush, and ocotillo. Creosote bush is most common on the well-drained soils of alluvial fans and flats. Other common plants of the Mojave Desert include creosote bush, blackbrush, greasewood and saltbush. King Clone, a creosote bush "(Larrea tridentata)" in California, is among the oldest living organisms. Primarily herbivorous, the chuckwalla eats creosote bush flowers, leaves, fruit, and occasionally insects. Creosote bush ("Larrea tridentata") and bur sage ("Ambrosia dumosa") dominate valley floors.