California Black Walnut Trees

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juglnas 1

The scientific name for a California Black Walnut Tree is Juglans californica. California Black Walnut trees are native, deciduous trees that grow from 20 to 49 feet tall. Trees tend to have multiple trunks which grow outward from a ring at the base, giving younger trees the appearance of v-shaped shrubs. The leaves are 1.5 to 3 inches long and the trunk is blackish brown and very furrowed or “grooved” (unlike other hybrid or cultivated walnut trees, many of which have smoother trunks). 


California Black Walnut trees live to be about 100 years old and produce seeds (walnuts) beginning at age 5 to 8. Walnuts from native walnut trees are smaller than those found in grocery stores (which generally come from English Walnut trees). 

Map of primary location for California Black Walnut Trees  

walnut fall color


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