Policeman’s helmet (Impatiens glandulifera) is an invasive weed that 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 […]
May 19-25 is the week that we celebrate 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. This year we want you to join others across Oregon in learning […]
Orange hawkweed (Hieracium aurantiacum) is a relatively new invasive weed in Clackamas County and we are working 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 roadsides, meadows, pastures, hayfields, and disturbed sites. […]
We are very pleased to welcome a new addition to the WeedWise team! The WeedWise program is pleased to announce our newest staff member Hayden Jorde! Hayden joins our team as a newly developed WeedWise Technician position. Hayden will support the WeedWise Program’s efforts managing invasive weeds across Clackamas County but will focus much of […]
Earth Day is April 22, 2024! Earth Day provides a great opportunity to reflect on the planet we all love and share. One of the biggest threats to our natural systems is from invasive species. The introduction and unchecked spread of invasive weeds disrupt food webs and cause a collapse of our natural systems. So […]
Invasive weeds can be extremely damaging and pose a real threat to the social, economic, and ecological health of our communities. One important tool for controlling large infestations of invasive weeds is herbicides. Industrial herbicides have been used to manage large infestations of invasive weeds since the 1940s, but their use is problematic for some […]
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 important invasive weed on your property. Sometimes referred to as Jack-by-the-hedge, garlic mustard is easily identified […]
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 26-March 3, 2024) kicks off today! Each year, folks around the country take a 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 little more […]
We are now accepting applications for multiple seasonal WeedWise Technicians The Clackamas Soil and Water Conservation District is seeking qualified candidates for multiple WeedWise Technicians to support program efforts in the Mt Hood National Forest and across Clackamas County to help protect natural areas and recreational opportunities. Closing Date: All application materials must be submitted […]
