If you are a hiker, a birdwatcher, a biker, or otherwise enjoy getting out in Washington’s forests, meadows, and deserts, you may see invasive species such as common crupinagarlic mustardknapweedsleafy spurge, or yellow starthistle. Or, if you’re camping and lighting a fire at the end of the day, your firewood could be a temporary home to non-native, wood-boring insects.

What Can I Do?

Don’t move firewood. To avoid introducing non-native insects and diseases from your firewood, buy your firewood near where you plan to burn it.

  • Obtain your firewood near where you camp. Firewood that is produced locally has less risk of introducing new pests and diseases to an area.
  • If you bring firewood, burn all of it. The longer it remains on the ground, the more chance that a pest or disease will move from the wood into the living trees nearby.

For more information, see the following resources:

Clean cars, equipment, personal gear, and animals. To prevent invasive species from hitching a ride as you move through natural areas, you can take the following actions:

Report and help eradicate invasive species and promote native and desired species.

Use certified weed-free feed for pack stock. In particular, feed weed-free forage for several days before transporting stock to new locations. For information about the state and federal programs, see the Washington Wilderness Hay & Mulch Program and its certified growers.