Salvia leucophylla (Purple sage, aka Gray sage) is an aromatic sage native to the southern coastal mountain ranges of California and Baja California. The common names refer to the pale purple flowers (Purple sage) or to the grayish leaves (Gray sage). Purple sage acquires more of the available resources (such as nutrients, water or light) from the environment using a chemical action on the surrounding plants. This is a survival mechanism and Purple sage is said to be allelopathic. It releases a compound in the air that can drift to nearby soil and interfere with seedling growth for many species of plants.