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Taxon  Report  
Juglans nigra  L.
Black walnut
Juglans nigra is a tree that is not native to California.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Genus: Juglans
Family: Juglandaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Toxicity: Possible skin irritation from touching the sap of this plant.

Wetlands: Occurs in non wetlands

Name Status:
Accepted by PLANTS + POWO
Alternate Names:
PLANTSWallia nigra
Information about  Juglans nigra from other sources
USDA PLANTS Profile (JUNI)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

[Wikipedia] As Food: Tapped in spring, the tree yields a sweet sap that can be drunk or concentrated into syrup or sugar that is not unlike the sap of sugar maple. (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/22/2025).