Crossosoma californicus

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Species Name: Crossosoma californicus
Common Name: California Rockflower

An uncommon native to the southern Channel Islands and Palos Verde Penninsula. This variable plant can be a shrub or small tree. Does best on coast with some supplemental summer water.

Plant Family: Crossosomataceae
Plant Type: Perennial
Height by Width: 3-15' H x 3-15' W
Growth Habit: Shrub or small tree
Deciduous/Evergreen: Evergreen
Growth Rate: Moderate
Sun Exposure: Full to part sun
Soil Preference: Well-draining
Water Requirements: Drought-tolerant to occasional
Cold Hardy to: Frost tender
Flower Season: Spring
Flower Color: White
Endangered?: List 1B.2
Distribution: Palos Verdes Peninsula, San Clemente Island, Santa Catalina Island
Natural Habitat: Dry, rocky slopes, canyons below 1500'

Care and Maintenance

  • Introduced into cultivation in California by Theodore Payne.
  • From California Native Plants, Theodore Payne's 1941 catalog: "A rare shrub from Catalina and San Clemente Islands. Of rather upright habit, attaining a height of 3 to 6 feet and occasionally 12 feet or more. Smooth oblong pale green foliage and white flowers resembling apple blossoms. Gallon can, 60c."
Other Names
  • Common name of "Apple Blossom Shrub" used by Payne in his 1941 catalog.