Ceanothus arboreus 'Powder Blue' at San Marcos Growers





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Products > Ceanothus arboreus 'Powder Blue'

Ceanothus arboreus 'Powder Blue' - Powder Blue Ceanothus

Note: This plant is not currently for sale. This is an archive page preserved for informational use.

Image of Ceanothus arboreus 'Powder Blue'

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Habit and Cultural Information

Category: Shrub

Family: Rhamnaceae (Buckthorns)

Origin: California (U.S.A.)

California Native (Plant List): Yes

Evergreen: Yes

Flower Color: Blue

Bloomtime: Winter/Spring

Height: 8-12 feet

Width: 10-15 feet

Exposure: Full Sun

Summer Dry: Yes

Irrigation (H2O Info): No Irrigation required

Winter Hardiness: 15-20� F

Ceanothus arboreus 'Powder Blue' (Powder Blue Ceanothus) - A large, bold-textured shrub with 1 1/2 to 3 inch-long leaves and an abundance of pale blue flowers held in teardrop-shaped inflorescences. Plant in full sun along the coast, light shade inland. Hardy to 15�. Plant in full sun to light shade. Hardy to 15� F. Selected in 1991 by Carol Bornstein, former Director of Horticulture for the Santa Barbara Botanic Garden, from an atypical, low-growing individual on Santa Cruz Island. It was hoped that this selection would retain the small size of the parent plant (3 feet in height), however plants in cultivation attain the same general proportions as the species. The largest plant known in cultivation grew 9 feet tall by 15 feet wide. This cultivar has a voluntary royalty that is paid by participating nurseries to support the Santa Barbara Botanic Garden�s plant introduction program. The genus name comes from the Greek word keanthos which was used to describe a type of thistle and meaning a "thorny plant" or "spiny plant" and first used by Linnaeus in 1753 to describe New Jersey Tea, Ceanothus americanus. This specific epithet is from the Latin word 'arbos' meaning tree in reference to this being a taller tree-like species. More information on this plant can be found on the Santa Barbara Botanic Garden's Plant Introduction Page. We grew this nice plant from 2012 until 2021.

This information about Ceanothus arboreus 'Powder Blue' displayed is based on research conducted in our horticultural library and from reliable online resources. We also will relate observations made about it as it grows in our nursery gardens and other gardens we have visited, as well how the crops have performed in containers in our nursery field. We will also incorporate comments that we receive from others and we welcome hearing from anyone with additional information, particularly if they can share any cultural information that would aid others in growing it.

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