Fraxinus dipetala

A deciduous shrub/small tree to 20 ft., growing in the California foothills, with fragrant white flower clusters; drought tolerant but better with summer water. Associated plants range from Grey Pine (Pinus sabiniana) with Whiteleaf Manzanita (Arctostaphylos viscida), Hollyleaf Redberry (Rhamnus ilicifolia), Basket Bush (Rhus trilobata), Interior Live Oak (Quercus wislizenii), Mountain Mahogany (Cercocarpus betuloides), Yerba Santa (Eriodictyon californicum), Buckbrush (Ceanothus cuneatus), and Blue Oak (Quercus douglasii). In the central coast ranges this Fraxinus is found on drier north slopes mixed with Coast Live Oak (Quercus agrifolia), and Blue Oak (Quercus douglasii). California Ash grows on coast range soils ranging from slightly alkaline clays, to slightly acidic, decomposed granite soils in the Sierra Nevada mountains up to around 4,000 ft. elevation; also found in southern California transverse and peninsular ranges California Ash is usually not found in the creek but above it on slopes, near springs. These sites become drier in summer but can have very moist (not wet) soil in winter.