Habitat: widespread in Sonoran and Chihuahuan deserts
Description: It is an evergreen shrub growing to 1-3 m tall, rarely 4 m. The stems of the plant bear resinous, dark green leaves with two leaflets joined at the base, each leaflet 7-18 mm long and 4-8.5 mm broad. The flowers are up to 25 mm diameter, with five yellow petals. The whole plant exhibits a characteristic odor of creosote, from which the common name derives.
Culture: require cold moist stratification, may need multiple cycles or extended duration. Require light for germination, do not cover.