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Noxious Weeds Management

Sunriver and Deschutes County have passed ordinances requiring property owners to take action to eliminate noxious weeds from their land. Sunriver's mandatory Noxious Weed Management Plan creates the guidelines and ordinances for actionable eradication of noxious weeds.

Noxious Invaders

The two main noxious weeds threatening Sunriver are Spotted Knapweed (Centaurea maculosa) and Dalmatian Toadflax (Linnarea dalmatica). These are not average garden-variety weeds.

These plants can:

  • Significantly lower the value and beauty of your property
  • Degrade the native ecosystem
  • Destroy vital wildlife habitat and forage
  • Poison domestic animals and wildlife

Pulling Together to Stop Noxious Weeds

2020 marks the 20th annual Sunriver Owners Association War on Weeds (WOW). The Sunriver community continues the battle against noxious weeds with the help of volunteers during the annual pull week in July and early August. Volunteers are treated to lunch at Mary McCallum Park to celebrate their efforts.

 Join war on weeds

 July 31-August 7, 2020

Call 541-593-1522 to volunteer

Is it a Weed or a Wildflower?

Even after the success of WOW, the fight is far from over. Noxious weed seeds can stay viable in the soil for up to 10 years. 

  • If you see spotted knapweed or bull thistle (refer to images below), please pull the plants and put them in the garbage before they go to seed.
  • If you see Dalmatian toadflax, contact Natural Resources for removal options.
  • Noxious knapweed examples

    Weed: Knapweed

    Knapweed flowers can be pink, purple or white and have a distinctive pineapple/artichoke shaped bud.

  • Knapweed-2

    Weed: Knapweed

    Knapweed flowers from June to October, this fast growing noxious weed will establish in any disturbed soil and release chemicals to inhibit surrounding vegetation.

  • bull thistle is a noxious weed that is prickly and is often growing along roadsides

    Weed: Bull Thistle

    Bull Thistle blooms from July to September often along roadsides and disturbed soil. It averages 2 feet high and is prickly. Remove with caution.

  • ToadFlax is a noxious weed found in Sunriver

    Weed: Dalmatian Toadflax

    Toadflax flower resembles a snapdragon and reproduces itself through its root system. Toadflax leaves are waxy with a blue-green color. Because of its extensive root system, pulling toadflax is not as successful as chemical spray. Contact Natural Resources if spotted.

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