• Olympic: Three Parks in One

    Olympic

    National Park Washington

There are park alerts in effect.
show Alerts »
  • Enchanted Valley Temporarily Closed to Camping September 1-14

    To protect contractor and visitor safety, Enchanted Valley will be temporarily closed to all public camping during the relocation of Enchanted Valley Chalet. Hikers and stock users may continue to travel through the valley, must be escorted by park staff. More »

  • Spruce Railroad Trail Improvements to Begin August 5

    Spruce Railroad Trail will be closed from the Lyre River TH to approximately 0.25 miles east of Devil’s Punchbowl. Work is expected to be completed by the end of October. The remainder of the trail will be accessible from the Camp David Jr. Road TH. More »

  • Safety Advisory: Mountain Goats

    NPS has received reports of aggressive mountain goats near trails at Hurricane Ridge, Royal Basin, Seven Lakes Basin, Lake of the Angeles, & Grand Pass. Visitors are required to maintain a distance of at least 50 yards from all wildlife. More »

  • Safety Advisory: Rabies

    Rabies has been detected in a single bat in the Lake Crescent area of the park. Rabies exposure is extremely rare, but fatal if untreated. Anyone observing unusual or aggressive behavior among park wildlife should inform a park ranger as soon as possible. More »

Help Stop the Spread of Invasive Species

Japanese Knotweed

This Japanese knotweed excluded native species before removal.

NPS Photo

Nonnative Species

Some nonnative species can be harmful to native species (including endangered species), natural ecosystems, or even human health. Nonnatives are also called "exotics" or "alien."

For example, nonnative Himalayan blackberries picked by campers and left behind in the park could sprout and eventually smother native shrubs like huckleberry or salal.

Harmful or aggressive nonnative species, like Himalayan blackberry or Japanese knotweed, are called "invasive."


Invasive Exotic Plants

Invasive exotic plants, also called "noxious weeds," are a serious threat to wild lands (other serious threats include habitat degradation and global warming).

We can slow the spread of weeds with help from visitors like you.

 
Spreading blackberry seeds

Some invasive plant seeds can easily latch onto shoes or clothes, like these dried berries from thorny Himalayan blackberry.

NPS Photo

How You Can Help!

During your visit to Olympic National Park keep the following tips in mind to avoid transporting seeds
or plant parts to new locations:

  • Before traveling to or around Olympic,
    clean or brush off your:

    S
    hoes and clothes
    Pets and stock
    Vehicles and tires
    Any other equipment that can carry seeds or plants
  • Pack out all trash and food
    (don’t throw that fruit seed into the woods!)
  • Learn how to identify the worst seven Invasive Plants in Olympic.
  • Try to Leave No Trace. Not only will you prevent the spread of weeds, but you will also help preserve the health and beauty of Olympic National Park.
 
Scot's Broom

Scot's broom removal in the Elwha.

NPS Photo

Want to do more?

In the Park:

At home:

  • When gardening or doing construction projects:

    Clean all equipment of plant material and use weed-free gravel or soil.

    Avoid compacting soil, tilling, or otherwise disturbing the soil. Replant, mulch, or cover disturbed or bare areas. Maintain closed forest canopy as much as possible.
  • Report weeds outside the Park to your local County Weed Control Board (See Invasive Plant Resources). The earlier weeds are treated, the better the chance of control.

Did You Know?

dam with water flowing

Removal of two dams on the Elwha River is the second largest ecosystem restoration project in the National Park System.