In a big boost to preventing further introductions of invasive plants, 12 new species have been added to the state’s quarantine list. More than half of the added species were used as ornamental landscape plants and have since escaped into… Read More ›
An invasive insect harming grape vines and other crops in the northeastern United States might show up in Washington soon and scientists are using another invasive species to help them detect it early. Tree-of-heaven (Ailanthus altissima), an invasive tree species… Read More ›
If you are out riding on the trails this summer, you can help protect our beautiful backcountry from noxious weed invasions by using weed free materials. Noxious weeds negatively impact Washington’s natural areas by out-competing native vegetation, increasing soil erosion,… Read More ›
Effective July 24, the list of prohibited plants in Washington just grew by six. The species added include several popular ornamental plants that are now prohibited from sale: butterfly bush (non-sterile varieties), yellow archangel, lesser celandine and all hybrid non-native… Read More ›
Before you take horses and pack animals to the backcountry, make sure you have the right hay. The Forest Service, BLM, and other government agencies are requiring weed free hay and forage on their lands in order to protect natural… Read More ›
Update 5/24/2016: Washington State Department of Agriculture (WSDA) will be holding a public hearing on June 9 to seek comment regarding six proposed additions to the Prohibited Plant List (also known as the Quarantine List). The State Weed Board requested the… Read More ›
