• American Camp parade ground looking west

    San Juan Island

    National Historical Park Washington

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  • American and English Camps Visitor Centers Open Labor Day

    The American and English camps visitor centers will be open on the Labor Day holiday, September 1. Call 360-378-2240, ext. 2226 or 360-378-4409 for information.

  • English Camp Visitor Contact Station on Winter Schedule

    The English Camp visitor contact station in the Royal Marine Barracks is closed for the season, starting September 2. Grounds are open daily from dawn to 11 p.m.

  • American Camp Visitor Center on Winter Schedule

    The American Camp visitor center is open 8:30 a.m. to 5 p.m. daily from September 2 to June 6, 2015. Grounds remain open daily from dawn to 11 p.m. Telephone 360-378-2240, ext. 2227 or 2226 for information. More »

Plants

douglas fir cones
Douglas fir cones catch the sunset at American Camp.
Lucas Pellant
 

Because of the varied ecosystems and biological communities of San Juan Island NHP, you'll find a diverse variety of plant life, including prairie, fir-hemlock-cedar forests, Garry oakwoodlands, thickets, intertidal areas, lagoons, and wetlands.

Prairie spans nearly half the acreage at American Camp, from the bluffs along South Beach to the south-facing slopes of Mount Finlayson. Non-native species have infested the prairie, but patches of native grasses and wildflowers still exist.

On the northern slopes of Mount Finlayson are Douglas fir, western hemlock, western red cedar, grand fir, and lodge pole pine. The understory includes evergreen salal and western sword fern.

South-facing slopes are drier, and though Douglas firs still dominate, the understory is much thinner. Other trees found here are the big leaf maple, Pacific madrone, and Pacific yew.

English Camp is dominated by mature Douglas firs and grand firs, big leaf maple, red alder, Pacific madrone, and a few western red cedars and Pacific yews. A remnant stand of open Garry woodlands remains on the south slope of Young Hill.

Because non-native plants such as thistle, tansy ragwort and blackberry are crowding out native grasses and wildflowers, efforts are underway to restore the prairie.

Links

Washington Native Plant Society

U.S. Forest Service: Celebrating Wildflowers – Native Plant Materials

Roadside Revegetation: An Integrated Approach to Establishing Native Plants

Revegetation Handbook

Native Plant Network

Flora of North America

Did You Know?

Bald eagle feeding young.

The San Juan Islands have the largest concentration of bald eagles in the continental United States. The once active nest in this photo is located at the American Camp visitor center. More...