Native to (or naturalized in) Oregon:
- Broadleaf evergreen, stiff shrub, 3-13 ft (0.9-4 m) tall, or low-spreading at high elevations, may form dense thickets, branchlets spread at nearly right angles, lateral branchlets thorn-like, young twigs have a soft, grayish pubescence. Leaves opposite (but sometimes appearing whorled), simple, oblong to obovate, margin entire or slightly toothed at apex, 0.5-2 cm long, bluish-green, conspicuously veined below, short petiole. Flowers creamy-white, many in clusters (umbles) which are on short, stiff branches. Fruit subglobose, a 3-horned capsule, 6 mm long, at maturity the upper portion separates from the lower section (it explodes), leaving receptacle and base attached to the shrub and dispersing three shiny dark seeds some distance.
- Sun, drought tolerant
Hardy to USDA Zone 6 Native range extends from southern Washington southward to Oregon and southern California and extreme western Nevada, found principally on gravelly or rocky locations. It is extremely variable and a number of forms have been identified and named. Sometimes separated into three botanical varieties:
- Ceanothus cuneatus var. cuneatus: flowers white to pale blue to lavender; leaves not closely clustered, blades oblanceolate to obovate or rounded, margins entire.
- Ceanothus cuneatus var. fascicularis: flowers white to pale blue to lavender; leaves closely clustered, blades narrow-oblanceolate to oblong, margines entire or few-toothed near tips.
- Ceanothus cuneatus var. rigidus: flowers bright to pale blue (white horticultural selections available); leaves not clustered, blades oblanceolate to round-ovate, margins toothed above middle or entire.
- Oregon State Univ. campus: SW corner of arboretum area south of Peavy Forest Science Center