Orange hawkweed (Hieracium aurantiacum) is a fairly new invasive weed in Clackamas County. With your help, our WeedWise team plans to keep it from becoming a common problem for landowners! A member of […]
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.
Celebrate Native Plant Appreciation Week!
Native Plant Appreciation Week is April 25-May 1, 2021. This annual celebration provides an opportunity to reflect on why it is essential to control invasive weeds. Join us all at the District in […]
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 Undesirable Beauty of Lesser Celandine
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. One […]
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 many native thistles found in Oregon, Canada thistle can quickly overrun an area and displace native […]
National Invasive Species Awareness Week: February 22 – 26
National Invasive Species Awareness Week (February 22 -26, 2021) kicks off today! Once a year, folks from around the country take a full week to consider the many impacts that non-native invasive species […]
Manage Weeds with our Weed Tool Library!
The Clackamas Soil and Water District WeedWise Program has a Weed Tool Library. This free resource includes shrub and tree removal tools and lake rakes available for use in your weed control project. […]
February Invasive Weed of the Month: Scotch Broom
Scotch broom is a wide-spread invasive weed in our community. You have probably noticed large stands of it along our rural roads and highways, in pastures and in forests. Now is a great […]
January Invasive Weed of the Month: English Ivy
English ivy (Hedera helix) may conjure up images of cozy, country cottages, but don’t be deceived. This invasive weed can destroy buildings, poison pets, and topple trees. Ivy grows quickly, requires little maintenance, […]
