Tansy ragwort (Senecio jacobaea) is an invasive weed with a long and deadly history in the Pacific Northwest. In Oregon, it is designated as a Class B invasive weed. It is believed to have been introduced here in the early 1900s through ballast water from a ship. This plant is native to Europe and Asia […]
![July’s Weed of the Month: Tansy Ragwort tansy slider](https://i0.wp.com/weedwise.conservationdistrict.org/wp-content/uploads/sites/2/2016/07/tansy-slider-100x100.jpg)