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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 your average, garden-variety weeds. Sunriver also has Bustle Thistle throughout the community.

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 in August.

 Join war on weeds

 August 1-14, 2020

TO VOLUNTEER: Click to complete the WOW Volunteer Form

Identification & Management of Sunriver Weeds

Spotted Knapweed

Common name: Spotted knapweed
Scientific name: Centaurea stoebe, synonyms C. biebersteinii and C. maculosa

Background: Spotted knapweed is a native of Europe and Asia which was introduced to North America in the 1890s and has spread extensively. Plants average about 1,000 seeds per plant, which are viable for seven years or longer.

  • Spotted Knapweed FAQs

    • Where to find Spotted knapweed in Sunriver?

    • How do I identify Spotted Knapweed?

    • How to control Spotted Knapweed in Sunriver

Identifying Spotted Knapweed

Updated on 05/29/2020 11:40 AM

Noxious, invasive weed found in Sunriver.


Dalmatian Toadflax

Common name: Dalmatian toadflax
Scientific name: Linaria dalmatica

Background: Dalmatian toadflax was introduced to North America from the Mediterranean region in the mid-1800s as an ornamental plant. This invasive weed is a prolific seed producer and has an extensive root system and regenerative capabilities that give it an advantage over native plants, which it can rapidly displace.

  • Toadflax FAQs

    • Where to find Dalmatian toadflax in Sunriver?

    • How to identify Dalmatian Toadflax?

    • How to control Dalmatian Toadflax in Sunriver?

Identifying Dalmatian Toadflax

Updated on 06/29/2020 10:22 AM

Bull Thistle

Thistle is identifiable by its size and sharp spines. Best to dig up with a shovel and heavy gloves.

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

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