Southern California Walnut, California Walnut, California Black Walnut Juglans californica

Detailed Listing For
Botanical Name:

Juglans californica







Common Name:

Southern California Walnut, California Walnut, California Black Walnut

20-40 ft
Minimum Hardiness Zone:
Harvest hemisphere:

Seed is Out of Stock:
Fill in the quantity you Need: 
Choose the "Check Out "Button and enter your contact information: 
Sheffield's will email when it arrives:  no payment at this time. Thank you

  • Juglans californica

Please select the quantity desired, and we will advise availability and price as soon as possible.
Growing Info, follow in order:
Scarification: Soak in water, let stand in water for 24 hours.
Stratification: none required.
Germination: can be sown in fall or spring, sow seed 1" deep, tamp the soil, mulch the seed bed, keep moist.
Other: Does not require stratification. However, a brief cold period seems to induce germination.
Physical Characteristics : A decidious Tree growing to 6 m (19ft 8in) at a medium rate. It is hardy to zone 8. It is in flower from Apr to May. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind.The plant is self-fertile. The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil.The plant prefers acid, neutral and basic (alkaline) soils..It cannot grow in the shade.It requires moist soil.
more »

Juglans californica , the California Black Walnut , also called the California Walnut , or the Southern California Black Walnut , is a large shrub or small tree (up to 30 feet tall) endemic to California . Some authorities (e.g. the California Native Plant Society ) combines this species with J. hindsii . On the other hand, a 2007 molecular analysis of the genus suggests that J. californica is sister to the remaining black walnuts (Rhysocaryon).This article uses the The Jepson Manual convention of species .

more »
Usda description:
More info on