How much sun does Hinds's black walnut need?

Hinds's black walnut grows best in full sun conditions.

When does Hinds's black walnut bloom?

Hinds's black walnut blooms in April and May.

Where is Hinds's black walnut native?

Hinds's black walnut (Juglans hindsii) is native to CA, per the World Checklist of Vascular Plants (Kew).

What butterflies or moths does Hinds's black walnut host?

Hinds's black walnut is a larval host plant for walnut sphinx moth.

Hinds's black walnut

Name: Pollinator Patch
Author: Pollinator Patch

Juglans hindsii

Last reviewed: October 2026

Hinds's black walnut (Juglans hindsii) is a perennial tree native to CA. It blooms in April and May.

Toxicity unknown

Hinds's black walnut (Juglans hindsii) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

medium

Size

600"–900" H × 480"–720" W

Bloom

Apr, May

Native to

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Browse plants for this ecoregion

Coast Range Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley Southern California Mountains Northwestern Forested Mountains Southern California/Northern Baja Coast

A large deciduous tree with pinnately compound leaves and dangling green catkins in spring. Round nuts encased in a thick green husk ripen in fall and can stain and litter the ground below the canopy.

Growing Hinds's black walnut

Grow Hinds's black walnut in full sun and medium water. Mature plants reach 600 to 900 inches tall and spread 480 to 720 inches wide.

Wildlife value

Host plant for walnut sphinx moth.

Catkins are wind pollinated; the tree hosts the walnut sphinx moth, and nuts are cached by squirrels.

Common questions

How much sun does Hinds's black walnut need?: Hinds's black walnut grows best in full sun conditions.
When does Hinds's black walnut bloom?: Hinds's black walnut blooms in April and May.
Where is Hinds's black walnut native?: Hinds's black walnut (Juglans hindsii) is native to CA, per the World Checklist of Vascular Plants (Kew).
What butterflies or moths does Hinds's black walnut host?: Hinds's black walnut is a larval host plant for walnut sphinx moth.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

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