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Northern California Black Walnut

Juglans hindsii, Juglandaceae

Zones
8–10
Layer
Canopy
Lifespan
Perennial
Growth
Moderate

Guild Roles

ProducerShade ProviderDynamic AccumulatorWindbreak

Growing Conditions

Sun

Full Sun (preferred)

Water

Moderate (established)High (seedling)

Soil pH

6.5 – 8

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Antagonistic Plants

Greengage PlumPrunus cerasifera

Walnut trees produce juglone which is toxic to stone fruits including plums, causing stunted growth and potential plant death.

Japanese ChestnutCastanea crenata

Walnut allelopathy can negatively affect chestnut growth, though chestnuts show moderate tolerance compared to other species.

Whitebark RaspberryRubus leucodermis

Northern California black walnut juglone is lethal to raspberry plants within root zone

Rough Shell MacadamiaMacadamia tetraphylla

Walnut juglone severely inhibits macadamia nut tree growth and development

Sugar HackberryCeltis laevigata

Walnut juglone effects on hackberry in riparian Mediterranean climates

Uses

Functions

Nut ProductionTimberWildlife HabitatErosion Control

Edible Parts

Nuts

Medicinal Uses

AntisepticAstringent

Common Questions

What zones does Northern California Black Walnut grow in?

Northern California Black Walnut grows in USDA hardiness zones 8 through 10.

Design guilds with Northern California Black Walnut and see companion relationships visually.

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