Prevent the spread of terrestrial invasive species

The best way to protect our natural areas from terrestrial invasive species is to prevent the spread of new invasive species to those areas. You can help prevent the spread. For example, invasive plant seeds can be transported in mud and hay. The eggs and larvae of invasive insects like emerald ash borer can be spread by moving firewood. Help keep your favorite recreation areas healthy:

Before you leave home:

  • make sure your belongings are free of mud and plant debris
  • pack cleaning tools and supplies for your trip (brush or broom, etc.)
  • identify sources of local or certified firewood and certified weed-free hay
  • identify cleaning stations near your destination.

At your destination:

  • acquire & use local or certified firewood
  • acquire & use certified weed-free hay.

Before you leave the trail or site:

  • inspect your pets, belongings, boots, and equipment; remove any mud or plant debris
  • dispose of plant debris and weed seeds in the trash
  • leave unused firewood onsite (don’t take it home with you).

Learn More about Terrestrial Invasive Species


All firewood used on Minnesota DNR lands must come from a state park or DNR-approved vendor. For more information, go to The Best Firewood Is The Local Firewood.

It is unlawful to move or transport noxious weeds or their propagating parts. For more information, go to Minnesota Department of Agriculture  .

Additional Resources