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 […]
Tag Archives | invasive weeds
Weed Tool Library is Open for Business!
The Clackamas Soil and Water District has a Weed Tool Library. This free resource includes 17 different shrub and tree removal tools and lake rakes available for use in your weed control project. […]
Winter Weeds: Bittercress, Dead Nettle, and Common Groundsel
Weeds are a never-ending challenge for farmers and gardeners across the Pacific Northwest. Even in winter, you might be surprised to see many weeds happily growing. Three common weeds you might find right […]
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 […]
It’s National Invasive Species Awareness Week!
National Invasive Species Awareness Week (February 26 -March 3, 2024) has begun! Once a year, folks from around the country take a full week to consider the many impacts that these species have […]
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, […]
December Invasive Weed of the Month: English Holly
English holly (Ilex aquifolium) is a popular evergreen frequently noticed during the month of December. Festive decorators and traditional songs “deck the halls with boughs of holly”. For many people, the shiny, dark […]
October Invasive Weed of the Month: Himalayan Blackberry
Himalayan blackberry (Rubus bifrons) tantalizes us with its sweet fruits in the summer and tortures us with its prickly vines all year long. Also known as Armenian Blackberry, this wide-spread and aggressive weed […]