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Ceanothus cordulatus
Ceanothus cordulatus Kellogg
Whitethorn Ceanothus, Mountain Whitethorn, Snow Bush
Rhamnaceae (Buckthorn Family)
Synonym(s):
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.
From the Image Gallery
No images of this plant
Plant Characteristics
Duration: PerennialHabit: Shrub
Leaf Retention: Evergreen
Leaf Complexity: Simple
Fruit Type: Capsule
Size Notes: Up to about 6 feet tall.
Leaf: Green
Bloom Information
Bloom Color: White , PinkBloom Time: May , Jun , Jul
Bloom Notes: Usually white, rarely pink.
Distribution
USA: CA , NV , ORNative Distribution: CA & NV, n. to OR
Native Habitat: Dry, open flats & slopes; 3000-9500 ft.
Growing Conditions
Water Use: LowLight Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: High
Soil Description: Dry, rocky soils.
Benefit
Conspicuous Flowers: yesValue to Beneficial Insects
Special Value to Native BeesSupports Conservation Biological Control
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
Butterflies and Moths of North America (BAMONA)
Pacuvius Duskywing (Erynnis pacuvius) Adult Food Source |
Propagation
Description: 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
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
View propagation protocol from Native Plants Network.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Native Seed Network - Corvallis, OR
Bibliography
Bibref 1186 - Field Guide to Moths of Eastern North America (2005) Covell, C.V., Jr.Bibref 1185 - Field Guide to Western Butterflies (Peterson Field Guides) (1999) Opler, P.A. and A.B. Wright
Search More Titles in Bibliography
Web Reference
Webref 30 - Calflora (2018) CalfloraWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resources
USDA: Find Ceanothus cordulatus in USDA PlantsFNA: Find Ceanothus cordulatus in the Flora of North America (if available)
Google: Search Google for Ceanothus cordulatus
Metadata
Record Modified: 2022-10-17Research By: TWC Staff