Woody Weeds of Clackamas County People who work with or manage invasive weeds on their property will be happy to check out a recent WeedWise publication entitled, Woody Weeds of Clackamas County. This […]
Archive | Weeds
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.
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 […]
October Invasive Weed of the Month: Himalayan Blackberry
Himalayan blackberry (Rubus bifrons) tantalizes us with its sweet fruits in the summer and tortures us with its prickly vines all year long. Also known as Armenian Blackberry, this wide-spread and aggressive weed […]
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 […]
Protect Your Forest From Fire
Forest fires are currently raging along the West Coast. Here in Clackamas County, when this time of year rolls around, we cross our fingers, hoping wildfires will not start on our property. Use […]
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 […]
Tansy Poisons Livestock – and Neighborly Relationships!
Tansy ragwort (Jacobaea vulgaris) has long tormented hay producers and rural landowners who graze livestock. Horses and cows are especially susceptible to this poisonous weed. In open fields, grazing animals will generally avoid […]
Going Hiking? Clean Your Boots!
As you head out for some well deserved exercise or restorative time in nature, remember to clean your boots before and after you hike. And your sneakers, sandals, and flip-flops too. It’s a […]
July Invasive Weed of the Month: Tansy Ragwort
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 […]
