Eschscholzia californica (commonly known as California poppy, Californian poppy, golden poppy, California sunlight, cup of gold) is a species of flowering plant in the Papaveraceae family, native to the United States and Mexico. It is an ornamental plant and it is used medicinally and in cooking, and it became the official state flower of California in 1903.
Its native habitat includes California and extends to Oregon, Washington, Nevada, Arizona, New Mexico, Sonora and northwest Baja California. The Antelope Valley California Poppy Reserve is located in northern Los Angeles County. At the peak of the blooming season, orange flowers seem to cover all 1,745 acres of the reserve. Other prominent locations of California poppy meadows are in Bear Valley (Colusa County) and Point Buchon (San Luis Obispo County).
Eschscholzia californica was the first named species of the genus Eschscholzia. California poppy is highly variable, with over 90 synonyms.