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 […]
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The Prickly Thistle: A June 2018 WeedWise update
Welcome to the June edition of the WeedWise newsletter, known as the Prickly Thistle! This is our opportunity to share with you just some of the great activities underway here at the WeedWise […]
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 designated as a Class B invasive weed in Oregon. This means that it is […]
The Prickly Thistle: A May 2018 WeedWise update
Welcome to the May edition of the WeedWise newsletter, known as the Prickly Thistle! This is our opportunity to share with you all of the great activities underway here at the WeedWise program! […]
10 Ways to Celebrate Oregon Invasive Weed Awareness Week!
May 13-19 has been declared Oregon Invasive Weed Awareness Week! This is an ideal time of the year to reflect on the invasive weeds impacting Oregon. Everyone can begin taking steps to combat […]
May Invasive Weed of the Month: Orange Hawkweed
Orange hawkweed (Hieracium aurantiacum) is a fairly new invasive weed in Clackamas County and, with your help, our WeedWise team plans to keep it from becoming a common problem for landowners! A member […]
The Prickly Thistle: An April 2018 WeedWise update
Welcome to the April edition of the WeedWise newsletter, known as the Prickly Thistle! This is our opportunity to share with you all of the great activities underway here at the WeedWise program! […]
April Invasive Weed of the Month: Garlic Mustard
Garlic mustard (Alliaria petiolata) is an increasingly invasive weed in our community. Native to central and western Europe, this fast-growing plant commonly invades sites such as parks, trails, roadsides, and streamsides. April is […]
The Prickly Thistle: A March 2018 WeedWise update
. Welcome to the March edition of the WeedWise newsletter, known as the Prickly Thistle! This is our opportunity to share with you all of the great things that the WeedWise program is […]
March Invasive Weed of the Month: Canada Thistle
Canada thistle (Cirsium arvense) is a wide-spread invasive weed found in all parts of Clackamas County. Unlike the many native thistles found in Oregon, Canada thistle can quickly overrun an area and displace […]
