Ceanothus divergens

Ceanothus divergens, commonly known as Calistoga ceanothus, is a rare evergreen shrub in the Rhamnaceae family. It is found in just a few locations in the Northern California Coast Ranges of California at altitudes of less than 500 meters. This plant has a growth habit described as ascending to erect and may attain a height of 3 ft. The plant’s preferred habitat is on shrub-covered, rocky, volcanic slopes. The hermaphrodite blue or purple flowers bloom in April and May. The sub-globose fruits are five to six millimeters in diameter. This plant is rarely seen in cultivation and not often available for sale.