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| 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 |
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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. Thought to be a hybrid between Ceanothus papillosus and Ceanothus griseus (now thyrsiflorus var. griseus), this 1962 introduction was named for the wife of John Coulter, who selected it from his nursery in the Bay Area. We have been growing this great plant at the nursery since 1980.
The information about Ceanothus 'Joyce Coulter' displayed on this page is based on research conducted in our library and from reliable online resources. We also relate observations made about it as it grows in our nursery gardens and other gardens we visit, as well how the crops have performed in containers in our nursery field. We will also incorporate comments 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 it.
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