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Ceanothus cordulatus Kellogg
Mountain whitethorn, Snow bush, Whitethorn ceanothus
USDA Symbol: CECO
USDA Native Status: L48 (N)
Mountain whitethorn or snow bush is an intricately branched, spiny, spreading shrub, 3-6 ft. tall and up to 8 ft. wide, with smooth, whitish bark and velvety, blue-green leaves. Fragrant, white flowers occur in dense clusters.
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf:
Fruit: Size Class:
Bloom InformationBloom Color: White
Bloom Time: May , Jun , Jul
, OR Native Distribution: CA
n. to OR Native Habitat:
Dry, open flats & slopes; 3000-9500 ft.
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: High
Soil Description: Dry, rocky soils.
BenefitConspicuous Flowers: yes
PropagationDescription: Layering, cutting or seed may all be effective means of propagation.
Seed Collection: Because dry capsules disperse their seed abruptly with a sudden ejection, it may be necessary to tie cloth bags around the clusters of capsules to catch the seeds.
Seed Treatment: A hot water treatment may be beneficial. (Bring water to a boil and then steep the seeds for 10-15 minutes.)
Commercially Avail: yes
Butterflies and Moths of North America (BAMONA)
is a larval host and/or nectar source for:
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
Record Last Modified: 2007-01-01
Research By: TWC Staff