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Early Detection & Rapid Response (EDRR)

Early Detection & Rapid Response (EDRR)

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On this page:

What is EDRR?
When is a species classified as Early Detection and Rapid Response?
EDRR Species in Washington County
How We Can Help

You may also like:

Weed & Pest Directory
Integrated Pest Management
Back to Invasive Species Management
Purple Loosestrife flowers.

Purple loosestrife.

Garlic mustard rosette.

Knotweed leaves and flowers.

Knotweed.

Giant hogweed flower.

Giant hogweed flower

False Brome

False brome.

Spurge laurel flowers

Spurge laurel.

What is EDRR?

Early Detection and Rapid Response (EDRR) is an approach to invasive species management that focuses on finding and removing potential invasive species before they spread and cause harm.

EDRR increases the possibility of eradication and is less expensive than trying to control well-established invasive species. While prevention is the first line of defense against invasive species infestations, it will not stop all of them from being introduced.

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When is a species classified as Early Detection and Rapid Response?

Plant species classified as EDRR are treated differently because they grow aggressively, spread quickly, or can change the composition of an environment.

EDRR species require a coordinated response between land managers and the community. Through active surveying, reporting networks, and quick decision making, new infestations can be found while still localized and containable.

Illustration depicting the phases of weed management
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EDRR species in Washington County:

  • On-the-go identification

    Download a copy of our Weed Watchers Guide to help identify species in the field.

    Weed Watchers Guide
  • Get help with identification

    Explore our Weed & Pest Directory for easy identification of EDRR species.

    Explore our Weed & Pest Directory
Balfour's balsam flowers.

Balfour’s Balsam (Impatiens balfourii)

EDRR / Plant
Common snapping turtle.

Common Snapping Turtle (Chelydra serpentina)

Aquatic or Semiaquatic / EDRR / Reptile / Toxic
Diffuse knapweed infestation.

Diffuse knapweed (Centaurea diffusa)

Agricultural / EDRR
Emerald ash borer's red metallic abdomen and shine green wings.

Emerald Ash Borer (Agrilus Planipennis)

Agricultural / EDRR / Forest / Insect
False brome clumbs.

False Brome (Brachypodium sylvaticum)

EDRR / Forest / Plant / Toxic
Garlic Mustard

Garlic Mustard (Alliaria petiolata)

EDRR / Forest / Plant
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How we can help:

What should you do if you spot an Early Detection and Rapid Response species?

  • num-1-wt

    Collect information about your sighting.

    If you suspect that you have found an EDRR species, please follow these steps so you can make a thorough report:

  • Take a picture of the plant

    Include something to show scale (a ruler or common object like a coin), and if possible, capture close-ups of any distinctive features.

  • Write a description of the plant

    Include details about the flower (color, shape, and size), leaf (shape and size), and any interesting characteristics (hairs, root structures, etc.).

  • Collect location information

    Record the closest address, intersection or mile marker, or how far past a trail or bridge crossing the sighting is, as well as any nearby landmarks. If you can record latitude and longitude coordinates on your phone, that’s even better!

  • Describe the size of the infestation

    Estimate how many feet wide and long the patch of plants is. It’s especially helpful if you can estimate how many plants are present.

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    Report your EDRR sighting.

  • Report online

    Visit the Oregon Invasive Species Hotline and click “Report Now.”

    Visit oregoninvasiveshotline.org
  • Email us

    Email the Tualatin SWCD Invasive Species Team.

    Email the Invasives Team
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Become a TWISTer!

The Tualatin Watershed Invasive Species Team (TWIST), previously Tualatin Watershed Weed Watchers, are a trained group of volunteers who help to identify EDRR species in the Tualatin River watershed.

We invite you to join the Tualatin Watershed Invasive Species Team Facebook group to learn more.

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More About Invasive Species Managment:

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Yellow tansy ragwort flowers

Weeds on Your Working Lands

July 12, 2023
Side-by-side comparison between periwinkle and Oregon iris

What’s the difference between native, non-native, and invasive plants?

January 20, 2023
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7175 NE Evergreen Pkwy #400
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