It is native to California and Baja California, where it grows in mountain and desert habitat, especially moist or disturbed areas.

[1][2][3][4] Diplacus fremontii is an annual herb with a thin stem growing 1 to 20 centimeters tall.

The oval leaves are up to 3 centimeters long, the ones higher on the plant are hairy in texture.

The tubular base of the flower is encapsulated in a wide, ribbed, hairy calyx of sepals with pointed lobes.

The corolla of the flower is reddish-purple with a darker pink throat with a yellow spot.