Tansy ragwort (Senecio jacobaea) is an invasive weed with a long and deadly history in ...
It is National Pollinator Week! Join all of us here at the WeedWise program in ...
Help us welcome the newest member to the WeedWise team! The WeedWise program is pleased ...
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 […]
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 […]
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 employees. […]
May 19-25 has been declared Oregon Invasive Weed Awareness Week! This is the one week of the year to reflect on the invasive weeds impacting Oregon and for us to begin taking steps to combat these aggressive and harmful invaders. What Are Invasive Weeds? When many people think of “weeds” they conjure images of a […]
Orange hawkweed (Hieracium aurantiacum) is a relatively new invasive weed in Clackamas County. With your help, our team plans to keep it from becoming a common problem for landowners! A member of the sunflower family, orange hawkweed is native to central and southern Europe and grows in open areas like gravel pits, roadsides, meadows, pastures, […]
Let’s Celebrate! The WeedWise program is in the business of preventing and controlling invasive weeds. As anyone that spends much time battling invasive weeds can attest, our work can feel a little daunting at times. We all have those days when we are battling a rather bothersome patch of invasive weeds, and lose sight of […]
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 a great time to manage this priority invasive weed on your property. Sometimes referred to as Jack-by-the-hedge, garlic mustard is easily identified […]
Each spring we welcome the return of abundant flowers and cherish them as they lift our spirits. Unfortunately, some of these beautiful plants have proven to be aggressive and ultimately highly unwanted. Look out for this one! One such menace is Lesser celandine (Ranunculus ficaria) which displaces more desirable plants in lawns, gardens, parks, and […]
Canada thistle (Cirsium arvense) is a widespread 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 native plants, reduce agricultural yield, and create problems for grazing animals when they infest a field or pasture. They also cost a […]
National Invasive Species Awareness Week (February 25 -March 1, 2018) kicks off today!Once a year, folks around the country take a full week to consider the many impacts that non-native invasive species have on our communities, working lands, natural areas, and pocketbooks. So take a moment to celebrate with the WeedWise Program to learn a […]