Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Rhamnaceae

Genus:

Ceanothus

Species:

Ceanothus × regius

Growth Characteristics

Growth Habit:

Shrub

Height:

180 cm

Drought Tolerance:

High

Bloom Months:

apr,may,jun

Bloom Colors:

blue, purple

Evergreen Shrub:

Yes

Landscaping Shrub:

Yes

Keystone Species Ranking

Caterpillar Keystone:

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

Garden & Ecology Notes

Wildlife Value:

bees, butterflies, hummingbirds

Deer Resistant:

Yes

Fragrant:

Yes

Fire Ecology:

Requires fire for germination

Fire Notes:

Ceanothus species exhibit fire-stimulated germination with heat and smoke triggering seed germination. Many resprout vigorously from crown or root burls after fire.

Propagation & Germination

Stratification:

Cold/moist stratification required — 60–90 days

Scarification:

Seed coat scarification required before sowing

Germination Time:

14–60 days

Notes:

Seeds benefit from hot water treatment or scarification before cold stratification. Germination can be erratic even with proper treatment.

The above propagation data sourced from Claude AI