How much sun does California wood fern need?

California wood fern grows best in shade conditions.

When does California wood fern bloom?

California wood fern blooms in July, August, and September.

Where is California wood fern native?

California wood fern (Dryopteris arguta) is native to AZ, CA, OR, WA, per vouchered herbarium specimen records and regional native plant society lists.

California wood fern

Name: Pollinator Patch
Author: Pollinator Patch

Dryopteris arguta

Last reviewed: September 2026

California wood fern (Dryopteris arguta) is a perennial fern native to AZ, CA, OR, WA. It blooms in July, August, and September.

Toxicity unknown

California wood fern (Dryopteris arguta) 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

shade

Water

medium

Size

12"–24" H × 18"–30" W

Bloom

Jul, Aug, Sep

Native to

AZ, CA, OR, WA

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Browse plants for this ecoregion

Coast Range Puget Lowland Marine West Coast Forest Northwestern Forested Mountains Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley Southern California Mountains Mojave Basin and Range Arizona/New Mexico Mountains Southern California/Northern Baja Coast

An evergreen fern with leathery, dark green, triangular fronds arranged in a spreading clump. Grows in shaded canyons, rocky slopes, and coastal bluffs, tolerating dry shade better than many ferns.

Growing California wood fern

Grow California wood fern in shade and medium water. Mature plants reach 12 to 24 inches tall and spread 18 to 30 inches wide.

Wildlife value

The dense fronds provide shelter and cover for ground-dwelling insects, salamanders, and small birds in shaded woodland understory.

Common questions

How much sun does California wood fern need?: California wood fern grows best in shade conditions.
When does California wood fern bloom?: California wood fern blooms in July, August, and September.
Where is California wood fern native?: California wood fern (Dryopteris arguta) is native to AZ, CA, OR, WA, per vouchered herbarium specimen records and regional native plant society lists.

Native range data from vouchered herbarium specimen records and regional native plant society lists. 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

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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