Redstem Ceanothus
Ceanothus sanguineus
Rhamnaceae · broadleaf · native
You recognize Redbark Ceanothus by its distinctive red to burgundy twigs and profuse white flower clusters, making it prominent in disturbed and dry slope habitats throughout the interior Pacific Northwest. This native deciduous shrub favors open, sunny sites where it colonizes readily.
Redbark Ceanothus reaches 6-12 feet tall in full sun with low to moderate water needs and exceptional drought tolerance (zones 5a-8b). It thrives on poor, well-drained soils and fixes nitrogen, enriching degraded sites. Fast-growing and fire-adapted with strong resprouting ability, it suits restoration plantings. Prune in late winter before growth. Watch for the same ceanothus diseases and insect issues; root rot develops in heavy, wet soils.
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 | Apr 1-Apr 30 |
| Bloom end / petal fall BBCH 69 | Apr 15-May 15 |
| Fruit/seed development BBCH 71 | Jun 1-Aug 31 |
| Fruit/seed maturity BBCH 85 | Sep 1-Nov 30 |
| Leaf drop BBCH 93 | Oct 15-Nov 30 |
| Dormancy BBCH 97 | Nov 15-Feb 28 |