Species PlantsWestern Sword Fern

Western Sword Fern

Polystichum munitum

CommonPlant
Illustration of Western Sword Fern (Polystichum munitum)

Western Sword Fern is the most abundant and characteristic fern of Pacific Northwest forests, forming spectacular vase-shaped clumps of deep green, sword-like fronds that carpet the forest floor. A single large plant can have over 100 fronds. It provides important year-round cover for salamanders, small mammals, and ground-nesting birds.

Habitat
Pacific Northwest coniferous and mixed forests from Alaska to California
Diet
Dense fronds provide year-round ground cover and shelter for wildlife
How common
Common

Best time to see a Western Sword Fern

The best time to see a Western Sword Fern is February–July, when about 61% of U.S. sightings happen, based on 40,118 research-grade iNaturalist observations.

J
F
M
A
M
J
J
A
S
O
N
D

Not certain it is a Western Sword Fern? What plant is this? walks through what to check first and the lookalikes that catch people out.

Recent Western Sword Fern sightings near you

Live, research-grade observations from iNaturalist. Allow location to center the map on you.

Spot a Western Sword Fern? Identify it instantly.

Point Huck at any plant, bird, or animal for an instant ID, its rarity, and a live map of where it is being seen near you.

Get Huck

Get an alert when a Western Sword Fern is spotted

Pick a park, state, or city and we’ll email you when one turns up there. One check a day, only when there’s something new.

Free. Unsubscribe from any email. See our Privacy Policy.

Love plants? Get Huck field notes

Spotting tips, new species, and the best of what people are finding in the wild - straight to your inbox.

By subscribing you agree to receive Huck emails. No spam, unsubscribe anytime. See our Privacy Policy.

More plants

Western Trillium
Western Trillium
Trillium ovatum
Western White Pine
Western White Pine
Pinus monticola
Western Yarrow
Western Yarrow
Achillea millefolium var. occidentalis
White Ash
White Ash
Fraxinus americana
White Avens
White Avens
Geum canadense
White Baneberry
White Baneberry
Actaea pachypoda
White Beakrush
White Beakrush
Rhynchospora alba
White Clover
White Clover
Trifolium repens