Invasive Species Program
On this page:
Invasive species threaten our ecosystem.
They outcompete native plants and animals, reducing biodiversity and altering our watershed’s habitats.
They can also have devastating economic impacts and harm human well-being. Invasive speciesA species that is not native to a location and tends to quickly spread. often lack natural predators that keep them in check. This allows them to grow unrestrained, causing tremendous damage to productive land, decreasing water quality, and destroying wildlife habitat.
We identify, survey, and treat invasive plant and animal species that pose a threat to our landscapes and communities.
We collaborate with partners and residents to prevent the spread of invasive species, detect new infestations, and increase public awareness of new invaders – referred to as Early Detection and Rapid Response (EDRR) species – within our watershed.
How we can help:
- Let us treat it
If you find one of our six priority weeds on your property, we’ll treat it for you.See our Weed & Pest Directory
- Get help with identification
We provide resources to help identify EDRR species.Download the Weed Watchers Guide
- Receive guidance
We make recommendations for managing invasive species on your property.
- Borrow tools
We lend weed-removal tools at no cost to remove invasive species on your property.Visit our Tool Loan Program
- Help us track
We track the spread of invasive species and identify new invaders before they proliferate.
- Attend a workshop
We host free Weed Watcher Workshops each spring to teach residents how to identify invasive plant species and to connect them to local community science efforts. You can also join our Tualatin Watershed Invasive Species Team Facebook Group!Find a Workshop