Deer Brush
Ceanothus integerrimus
Rhamnaceae · broadleaf · native
You spot Deer Brush as a semi-erect deciduous shrub with soft foliage and abundant, frothy white (occasionally pale blue or pink) flower clusters in late spring throughout open coniferous forests of the Pacific Northwest. Mule deer browse this nitrogen-fixing native heavily for seasonal nutrition.
Deer Brush grows 6-15 feet tall in full sun with low water needs and outstanding drought tolerance once established (zones 7a-8b). Hardy, nitrogen-fixing, and fire-adapted, it suits riparian restoration and dry slopes. Prefers well-drained, adaptable soils; intolerant of shade. Blooms on new wood; prune in late winter or early spring. Monitor for leaf spot and root rot; three documented insect pests include root weevil and whitefly.
Quick Facts
Phenological Calendar
| Stage | Typical Window |
|---|---|
| Bud break BBCH 07 | Feb 15-Mar 15 |
| Leaf emergence BBCH 11 | Mar 1-Apr 1 |
| Bloom start BBCH 61 | May 1-May 31 |
| Bloom end / petal fall BBCH 69 | May 15-Jun 15 |
| Fruit/seed development BBCH 71 | Jun 1-Aug 31 |
| Leaf drop BBCH 93 | Oct 15-Nov 30 |
| Dormancy BBCH 97 | Nov 15-Feb 28 |