Clean your boots! And your sneakers, sandals, and flip-flops too. Give them a quick check before and after you hike to prevent the spread of invasive weeds. Summer is here and that means […]
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.
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 a Class B invasive weed in Oregon. This means that it is a weed […]
National Invasive Species Awareness Week, May 15 – 22
What’s better that one National Invasive Species Awareness Week for 2021? How about two? National Invasive Species Awareness Week Part 2 (May 15 – 22, 2021) is upon us! Take some time this […]
May Invasive Weed of the Month: Orange Hawkweed
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 […]
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 […]
