Centennial is a low-growing ceanothus with deep cobalt-blue flowers are concentrated in clusters which  when viewed against the glistening green surface of the leaves the flowers sparkle like water.  An evergreen sub-shrub   Ceanothus 'Centennial'  reaches to  1' tall to 5' wide. The deep blue flowers occur in late spring to early summer  attracting pollinators such as bees. A tough low maintenance groundcover it is well suited  to small gardens  median strips  and slopes. This plant thrives in the dry shade or the understory of oak trees.Plant in full sun if coastal  and part shade inland. If you live in the hills or mountains you'll be glad to know that the deer do not like this plant. Follow a regular watering schedule during the first growing season to establish a deep  extensive root system. Centennial Ceanothus is drought tolerant and frost hardy to 15-20 degrees F. Ceanothus  'Centennial' is a hybrid of C. foliosus x C. griseus introduced by Roger Raiche of U.C. Botanic Garden in 1990.