 | Ray Hartman California Lilac. You haven't seen how lovely blue can be until you've seen a Ray Hartman California Lilac (Ceanothus x 'Ray Hartman') in full bloom! When this broad-leaved evergreen shrub is covered in puffy clusters of blue flowers! It originated by chance as a cultivated hybrid between Ceanothus arboreus and Ceanothus griseus in Ray Hartman's garden in the 1940s. It was released under the name 'Blue Sky' in 1954, before earning its discoverer's name later on. As one of the founders of the Saratoga Horticultural... - Ray Hartman California Lilac. |