Creeping thistle (Cirsium arvense) is a widespread invasive weed that can be found across much of Clackamas County. Unlike many of the native thistles...
hr We have plenty of thistles growing in our area and landowners across the region are working hard to combat these prickly invaders. While most of the...
Thistles are one of the most common weed problems that property owners deal with in Clackamas County. Many of the thistles we encounter are invasive and can...
