Plantae > Tracheophyta > Magnoliopsida > Fagales > Juglandaceae > Juglans > Juglans californica

Juglans californica (Southern California walnut; southern california walnut)

Wikipedia Abstract

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) of the walnut family, Juglandaceae, endemic to California.
View Wikipedia Record: Juglans californica


Allergen Potential [1]  Medium-High
Edible [2]  May be edible. See the Plants For A Future link below for details.
Flower Type [2]  Monoecious
Leaf Type [2]  Deciduous
Lifespan [3]  Perennial
Pollinators [2]  Wind
Specific Gravity [4]  0.47
Structure [2]  Tree
Usage [2]  Often used as a rootstock for J. regia. Plants produce chemicals which can inhibit the growth of other plants. These chemicals are dissolved out of the leaves when it rains and are washed down to the ground below, reducing the growth of plants under the tree; The roots of many members of this genus produce substances that are toxic to many plant species, especially apples (Malus species), members of the Ericaceae, Potentilla spp and the white pines (certain Pinus spp.); Wood - moderately coarse-grained. An attractive wood, but the frequent branching pattern of the trunk limits the use of this wood commercially[229]
View Plants For A Future Record : Juglans californica

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
San Dimas Biosphere Reserve 17161 California, United States  


Clavaspis disclusa (decluse scale)[5]
Diaspidiotus aesculi (buckeye scale)[5]
Haploa lecontei (Leconte's Haploa)[6]
Sciurus griseus (western gray squirrel)[7]
Sciurus niger (eastern fox squirrel)[7]
Semiothisa aspirata[6]
Spilosoma vestalis[6]

Range Map

North America;



Attributes / relations provided by
1Derived from Allergy-Free Gardening OPALS™, Thomas Leo Ogren (2000)
2Plants For A Future licensed under a Creative Commons License
3USDA Plants Database, U. S. Department of Agriculture
4Forest Inventory and Analysis DB version 5.1, May 4, 2013, U.S. Forest Service
5Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009
6HOSTS - a Database of the World's Lepidopteran Hostplants Gaden S. Robinson, Phillip R. Ackery, Ian J. Kitching, George W. Beccaloni AND Luis M. Hernández
7Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access