Carried by 10 nurseries
View Availability at NurseryData provided by the participants of the Consortium of California Herbaria
View additional distribution information on the Jepson eflora
Ceanothus integerrimus (Deer Brush) is a woody shrub in the Rhamnaceae (Buckthorn) family native to the western United States, in Arizona, New Mexico, California, Oregon, and Washington. It grows in a wide range of habitats including chaparral mountain shrub regions, in hardwood forests of the west, and in fir, spruce, and Ponderosa Pine communities, being most abundant in chaparral in California. Due to its widespread distribution, it exhibits a variety of forms. In some locations it is a deciduous shrub from 1-4 meter tall with an open ascending to erect branch habit. In other locations it is evergreen or semi-deciduous and decumbent. Some occur very close to the coast while most are found inland in mountain settings. There are two recognized varieties with overlapping ranges, a reflection of the species' variability. It is a drought-tolerant phanerophyte. Nitrogen fixing actinomycete bacteria form root nodules on Ceanothus roots. Like most Ceanothus, the flowers are attractive and fragrant. The flowers are usually white but occasionally shades of blue. May be tricky in the garden unless you can provide exactly the conditions it requires. It is recommended for mountain gardens.
Shrub
3 - 13 ft Tall
7 ft Wide
Upright, Mounding, Weeping
Moderate
Winter Deciduous, Winter Semi-deciduous, Evergreen
Pleasant
White, Lavender, Blue
Spring, Winter
Bank stabilization
Full Sun
Low, Very Low
Max 2x / month once established
Moderate
Tolerates cold to -10° F
Fast, Medium, Slow
Tolerates decomposed granite or clay.
Soil PH: 4.0 - 7.0
Prune out rangy branches in late summer to maintain a neat appearance and encourage compact growth. For propagating by seed: Hot water and 2.5-3 mos. stratification.
1, 2, 3, 4, 5, 6, 7*, 14, 15*, 16*, 17, 18, 19, 20, 21
Dry slopes, ridges, canyons in the mountainous areas of the state, as part of chaparral, evergreen forest or oak woodland
Mixed Evergreen Forest, Northern Oak Woodland, Yellow Pine Forest
Can be found with a number of different companion plants depending on region of the state, including Manzanita (Arctostaphylos spp.), Scrub Oak (Quercus berberidifolia), Coffeeberry (Frangula spp.), Toyon (Heteromeles arbutifolia), Madrone (Arbutus mezesiesii), Canyon Oak (Quercus chrysolepis), and Ponderosa Pine (Pinus ponderosa).
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Likely
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Confirmed
Brown Elfin
Callophrys augustinus
Adela septentrionella
Adelphagrotis indeterminata
Aethaloida packardaria
Asparagus
Asparagus officinalis
Canola
Brassica napus
Peppers
Capsicum annuum
Chicory
Cichorium intybus