Japanese knotweed (Fallopia japonica) has been called a “nightmare” and a “botanical bully,” and is one of the 100 worst global invaders. These characterizations give you a pretty good idea of just how unwelcome this invasive […]
Detecting, controlling, and eradicating invasive plants are topics captured in the Weeds category. Invaders affect wildlife and crop production. In some cases they pose health risks to people and animals.
Puncturevine (Tribulus terrestris) is aptly named! This invasive weed has spiny seed heads on it that can easily puncture a bike tire, inflatable raft, animal paw, or footwear. Be on the lookout because it is beginning […]
Tansy ragwort (Senecio jacobaea) is an invasive weed with a long and deadly history in the Pacific Northwest. In Oregon, it is designated as a Class B invasive weed. It is believed to have been introduced […]
Summer is upon us and that means Oregonians will be out in force, visiting the many wonderful parks and recreation areas for which our state is so famous. Native plants and native wildlife definitely make our […]
Calling all outdoor explorers! Here is a terrific opportunity to engage in citizen science to help us identify and report invasive weeds in the Mt. Hood National Forest. Your interest in exploring natural areas and observational […]
Policeman’s helmet (Impatiens glandulifera) is an invasive annual which threatens streams and rivers throughout the Pacific Northwest. In Oregon it is designated as a Class B invasive weed. It was introduced as an ornamental plant originally […]