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| Category: Shrub |
| Family: Rhamnaceae (Buckthorns) |
| Origin: California (U.S.A.) |
| Evergreen: Yes |
| Flower Color: Dark Blue |
| Bloomtime: Spring |
| Synonyms: [Ceanothus 'Darkest Blue'] |
| Parentage: (C. foliosus x griseus) |
| Height: <1 foot |
| Width: 6-8 feet |
| Exposure: Full Sun |
| Drought Tolerant: Yes |
| Irrigation (H2O Info): Low Water Needs |
| Winter Hardiness: 15-20° F |
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Ceanothus 'Centennial' (Wild Lilac) - A mounding groundcover shrub growing to about 1foot tall by 6 to 8 feet wide but typically less. It has small, shiny dark green leaves and round dark blue (darker than Ceanothus 'Concha') flower clusters that in spring. Plant in light shade, makes a good groundcover at the outer edges of a live oak canopy. Noted as more heat tolerant and requiring less summer water than C. Carmel Creeper in inland plantings. This plant has proven somewhat problematic and short lived in some mass plantings in the Santa Barbara area - while not absolutely sure of the reasons for this we believe that planting in heavy or alkaline soils should be avoided. Plant in full sun to light shade. Hardy to 15° F. We originally grew this Roger Raiche C. griseus and C. foliosus hybrid as 'Darkest Blue'.
The description above is based on our research and observations of this plant growing in our nursery, in our own garden and in other gardens in the Santa Barbara area. We would appreciate hearing from anyone who has additional information about this plant, even if they disagree with what we have written.
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