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Products > Ceanothus 'Joyce Coulter'
Ceanothus 'Joyce Coulter' - Joyce Coulter Ceanothus
Image of Ceanothus 'Joyce Coulter'
[2nd Image]
Habit and Cultural Information
Category: Shrub
Family: Rhamnaceae (Buckthorns)
Origin: California (U.S.A.)
Evergreen: Yes
Flower Color: Blue
Bloomtime: Spring
Parentage: (C. papillosus var. roweanus x C. thyrsiflorus?)
Height: 2-3 feet
Width: 10-15 feet
Exposure: Full Sun
Summer Dry: Yes
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 10-15 F
Ceanothus 'Joyce Coulter' (Joyce Coulter Ceanothus) - A reliable, fast-growing, somewhat mounding evergreen shrub with arching branches 2 to 3 feet tall and 10 to 15 feet, possibly even wider. The slightly elliptic, glossy green leaves vary in length from to 1 inches and the medium blue flowers, borne on 3 to 5 inch-long clusters, add vibrant color for several weeks in spring.

Plant in full sun (coastal) and water infrequently to occasionally - is drought tolerant when grown along the coast, but require occasional summer irrigation and part shade in hot, inland sites. Hardy to 15 degrees F. 'Joyce Coulter' is useful as a large-scale, mounding groundcover and is notable for its tolerance of regular irrigation and heavy soils.

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. Ceanothus 'Joyce Coulter' is thought to be a hybrid between Ceanothus papillosus and Ceanothus griseus (now thyrsiflorus var. griseus), this 1962 introduction Saratoga Horticultural Fondation introduction was found by John Coulter (1910-2009) in his own nursery crops at his Coulter's Nursery in San Carlos, California and he named it for the wife Joyce. We have been growing this great plant at the nursery since 1980. 

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