Snowbrush Ceanothus

Ceanothus velutinus

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rhamnaceae
Genus:
Ceanothus
Species:
Ceanothus velutinus
USDA Symbol:
CEVE

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
300 cm
Light Requirements:
Full Sun,Part Shade,Shade
Drought Tolerance:
High
Bloom Months:
may,jun,jul,aug
Bloom Colors:
white, cream
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★★☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★★☆ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

ceanothus leafminer moth (Tischeria ceanothi), Ceanothus Silkmoth (Hyalophora euryalus), Columbia silk moth (Hyalophora columbia), Elegant Sheep Moth (Hemileuca eglanterina), Kaslo silkmoth (Hyalophora "kasloensis"), Pseudoglaea olivata, Western tent caterpillar (Malacosoma californica), Brown Elfin (Incisalia augustinus), California hairstreak (Satyrium californicum), California tortoiseshell (Nymphalis californica), Hedgerow Hairstreak (Satyrium saepium), Pale Swallowtail (Papilio eurymedon)

Reported Fauna Sightings

Bees: Fuzzy-horned bumble bee (Bombus mixtus), Two-form bumble bee (Bombus bifarius), Yellow head bumble bee (Bombus flavifrons), Yellow-faced bumble bee (Bombus vosnesenskii) Butterflies:Brown Elfin (Callophrys augustinus), California tortoiseshell (Nymphalis californica), Hedgerow Hairstreak (Satyrium saepium), Pacuvius Duskywing (Erynnis pacuvius)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, birds, deer
Fragrant:
Yes
Fire Ecology:
Requires fire for germination
Fire Notes:
Resprouts vigorously from root crown after fire. Seeds exhibit fire-stimulated germination; heat and smoke break seed dormancy. Important post-fire colonizer.

Soil Requirements

Soil Type:
well-drained, rocky or sandy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
often found in disturbed sites like post-fire areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 90–120 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
30–90 days
Notes:
Seeds benefit from hot water treatment or fire scarification followed by cold stratification. Smoke treatment may also improve germination.

The above propagation data sourced from Claude AI

Pre-treatment: Seeds: Soak in boiling water for 10 seconds, transfer to cold water, then soak in 1% hydrogen peroxide for 24 hours, rinse, and soak in water for an additional 4 hours. Stratify at 1 to 3 °C for 90 days. Cuttings: Cut into 20-30 cm lengths, treat with 2000 ppm liquid IBA, and place in mist bed with bottom heat.

Establishment: Cuttings taken in late April have the highest rooting percentages. Roots are susceptible to excessive moisture and should be uppotted into a well-drained media and carefully stored over winter. Cuttings produce callus before root initiation. Seedlings require careful irrigation practices, good airflow, and sunlight during growth. They are very susceptible to damping-off disease and must dry down between irrigations.

Source: npn.rngr.net