• American Camp parade ground looking west

    San Juan Island

    National Historical Park Washington

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  • English Camp Visitor Contact Station on Summer Schedule

    The English Camp visitor contact station in the Royal Marine Barracks is open 9 a.m. to 5 p.m., daily through September 1. Grounds are open daily from dawn to 11 p.m.

  • American Camp Visitor Center on Summer Schedule

    The American Camp visitor center is open 8:30 a.m. to 5 p.m. daily through September 1. Grounds remain open daily from dawn to 11 p.m More »

  • Brief American and English Camps Visitor Center Closure

    The American and English camps visitor centers will be closed from 11 a.m. to 2 p.m., Wednesday, August 27. We apologize for any inconvenience this may cause.


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.


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?

Did You Know?

James Alden, commander of the USCS Steamer Active, carried dispatches during the Pig War crisis. During the Battle of Mobile Bay he led the Union fleet into the harbor until stalled by Confederate mines. That's when Admiral David G. Farragut shouted "Damn the torpedoes..."