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 ¾ to 1 ½ 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.
Information about Ceanothus 'Joyce Coulter' displayed on this page is based on our research about it conducted in our library and gathered from reliable online sources. We include observations made of this plant as it grows in our nursery gardens and in other gardens that we have visited, as well as how the crops have performed in containers in our own nursery field. We will also incorporate comments that we receive from others about this plant when we feel it adds information and particularly welcome hearing from anyone who has any additional cultural recommendations that would aid others in growing it.