Redstem Ceanothus

Ceanothus sanguineus

Rhamnaceae

• Keystone plant
• Spokane Native
• USDA Zone 5-9
• Sun - Part Shade
• Size: 8’ wide x 8’ tall
• Drought Tolerant: Yes
• Evergreen: no
• Flower Color: white (May - July)
• Wildlife Value:  Flowers attract bees, butterflies, and hummingbirds; nitrogen-fixing root nodules improve soil; provides cover; hosts butterflies; seeds eaten by birds

Redstem Ceanothus is a native deciduous shrub growing to 8 feet tall and wide with an upright, somewhat open habit. It thrives in full sun to partial shade and adapts to various soil conditions, though it prefers well-drained sites. Once established, this hardy shrub becomes quite drought-tolerant. It grows naturally on forest edges, in open woodlands, and on disturbed sites throughout the Pacific Northwest, often appearing in areas recovering from fire or logging due to its ability to fix nitrogen and improve degraded soils.

The plant's most distinctive feature is its striking red to purple-red stems and branches that provide exceptional winter interest after leaves drop. The deciduous leaves are oval with three prominent veins, emerging bright green in spring. From May through July, the shrub becomes covered in delicate clusters of small, fragrant white flowers arranged in dense, fluffy panicles. These showy blooms create a spectacular display against the dark stems. The flowers are followed by small three-lobed capsules containing tiny seeds.

As a keystone species, Redstem Ceanothus is ecologically significant. The abundant flowers attract numerous pollinators including native bees, butterflies, and hummingbirds. Perhaps most importantly, this shrub has nitrogen-fixing root nodules that enrich the soil, benefiting surrounding plants—a crucial trait for restoration projects and challenging sites. Birds consume the seeds, and the plant provides good cover for wildlife. Indigenous peoples used Ceanothus for various purposes—the flowers produced a soapy lather for washing, and the plant had medicinal applications. The wood was used for tools and implements.

Excellent for restoration plantings, woodland gardens, mixed borders, and as a transitional plant between forest and open areas. The nitrogen-fixing ability makes it valuable for improving poor soils and supporting other plants. Works beautifully with ponderosa pine, Oregon grape, serviceberry, oceanspray, and native wildflowers. The colorful red stems create dramatic winter landscapes. This relatively fast-growing shrub is perfect for establishing native plant communities quickly. Good for pollinators, wildlife habitat, and soil improvement in naturalized Spokane-area landscapes.