Preventing the Spread of Invasives

A field researcher surveys for weeds in Delight Lake, Kenai Fjords.
The best way to manage invasive plants is to not let them get established in the first place. The National Park Service surveys for invasive plants to make sure we catch an infestation early. Here researcher Christina Kriedeman surveys for Elodea in Delight Lake in Kenai Fjords National Park.

NPS/Renee Sniegocki

Prevention is the most effective method for protecting against biological invasion. There are many things you can do to prevent the introduction and spread of invasive plants in Alaska.

  • Keep wild areas wild and undisturbed.
  • Don't pack a pest. Make sure you and your clothes, gear, vehicle, boat, or pet are not inadvertently transporting seeds or plant fragments.
  • When landscaping:
    • Use plants that are native to your local region as much as possible or those that are not known to be invasive.
    • Avoid disturbance to natural areas, including clearing of native vegetation and dumping of yard wastes.
    • Control invasive plants in your landscape
    • Discuss your concerns about invasive plants with nurseries and garden shops and ask them not to sell these species. Ask for non-invading alternatives instead.
    • Use only certified weed-free hay and mulch.
    • Inspect mineral material sources for invasive plants prior to using gravel.
  • Offer to assist in invasive plant removal projects.
  • Learn about invasive species that may be found in your area and report new findings. In Alaska, call 1-877-INVASIV (1-877-468-2748) or contact the Alaska EPMT by email at
  • Spread the word! Alaska doesn't need the problems brought by invasive species that can be prevented by vigilance and collaboration.

Last updated: April 17, 2017