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Knotweed

September’s Weed of the Month: Knotweed

September is the Time to Control Japanese Knotweed 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 weed is in our community. Japanese knotweed is fast-growing and hardy, […]

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Tansy Ragwort Poisons Livestock and Neighborly Relationships!

Tansy ragwort has long tormented rural landowners who graze livestock. Horses and cows are especially susceptible to this poisonous weed. In open fields, grazing animals will generally avoid eating tansy ragwort, but in heavily infested pastures they may have few other options.  Contaminated hay is particularly a problem because it becomes impossible for feeding animals […]

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August’s Weed of the Month: Puncturevine

Puncturevine (Tribulus terrestris) is aptly named! This invasive weed has spiny seed heads that can easily puncture a bike tire, inflatable raft, animal paw, or footwear. Be on the lookout because it is beginning to make its way into Clackamas County from eastern and southern Oregon. Also known as “goathead”, puncturevine is native to southern […]

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Staff Spotlight: Samuel Leininger, WeedWise Manager

  Get to know the WeedWise program, through our people! The success of the WeedWise program is in great part due to the hard work and dedication of our staff.  If you have ever called the office or stopped by for assistance with your weed problems, you have undoubtedly worked with one of our hard-working […]

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It is National Pollinator Week!

It is National Pollinator Week! Join all of us here at the WeedWise program in celebrating our native pollinators. June 17-23, 2019 has been designated as National Pollinator Week and there are activities going on here in Oregon and across the country! Summer is here and the weeds and wildflowers are blooming all around us. […]

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Welcome Justin!

Help us welcome the newest member to the WeedWise team! The WeedWise program is pleased to announce our newest staff member Justin Cooley!  Justin joined the WeedWise team in May and is already proving to be a valuable addition to our team. Prior to joining the WeedWise team, Justin managed the invasive species control program […]

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Woody Weeds of Clackamas County

A New WeedWise Publication The WeedWise Program is pleased to announce a new publication entitled, Woody Weeds of Clackamas County.  This resource guide is intended for use by local landowners and land managers to help them identify and manage woody weeds and naturalizing plants on their property. The Woody Weeds of Clackamas County covers a […]

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June’s Weed of the Month: Policeman’s Helmet

Policeman’s helmet (Impatiens glandulifera) is an invasive weed which grows in ditches, wetlands, and along waterways. Native to India, this fast-growing annual was introduced as an ornamental plant due to its impressive growth and the showy purple, pink or white blooms. Since introduction, it has escaped cultivation to become the dominant riparian vegetation in many […]

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