Spurge laurel (Daphne laureola) is neither a spurge nor a laurel, but rather an invasive plant in the Daphne family. This perennial plant has poisonous berries, spreads aggressively in our native forests, and […]
Tag Archives | invasive weed
September Invasive Weed of the Month: Japanese Knotweed
Japanese knotweed (Fallopia japonica) has been called a “botanical bully” and “the alien shrub that can’t be stopped.” It is considered invasive in many parts of the world. This gives you a pretty […]
August Invasive Weed of the Month: Puncturevine
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 […]
June Invasive Weed of the Month: Policeman’s Helmet
Policeman’s helmet (Impatiens glandulifera) is an invasive annual which threatens streams and rivers throughout the Pacific Northwest. It is a Class B invasive weed in Oregon. This means that it is a weed […]
May Invasive Weed of the Month: Orange Hawkweed
Orange hawkweed (Hieracium aurantiacum) is a fairly new invasive weed in Clackamas County. With your help, our WeedWise team plans to keep it from becoming a common problem for landowners! A member of […]
November Invasive Weed of the Month: Spurge Laurel
Spurge laurel (Daphne laureola) is neither a spurge nor a laurel, but rather an invasive plant in the Daphne family. This perennial plant has poisonous berries, spreads aggressively in our native forests, and […]
September Invasive Weed of the Month: Japanese Knotweed
Japanese knotweed (Fallopia japonica) has been called a “nightmare” and a “botanical bully,” and is considered invasive in many parts of the world. These characterizations give you a pretty good idea of just […]
August Invasive Weed of the Month: Puncturevine
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 […]
June Invasive Weed of the Month: Policeman’s Helmet
Policeman’s helmet (Impatiens glandulifera) is an invasive annual which threatens streams and rivers throughout the Pacific Northwest. It is a Class B invasive weed in Oregon. This means that it is a weed […]
