California's south coast The Black Walnut is a big shrub or small tree native to California that may grow up to 30 feet tall. Close to the ground, the main stem might branch, giving the appearance of two trees that have grown together and subsequently separated. At maturity, it has thick bark that is heavily channelled or furrowed. The leaves are big, pinnately compound, with 11-19 lance-shaped leaflets with serrated edges and no hair in the vein angles. It features a tiny hard nut that is difficult to extract from a thick, shallowly grooved shell. The nuts are eaten by the Chumash Indians of California's Channel Islands, although they are not produced commercially for this reason.
Botanical Name : Juglans nigra Northern
Common Name : Northern Black Walnut
Height : 30 ft
Spread : 15 ft
Germination Info : Seed requires 90-120 days cold moist stratification
Hardiness zone : 4-8
Average seed per ounce : Approx. 1