Mature Tansy Ragwort plants can be easily spotted because of their bright yellow daisy-like flower and ragged leaves. Plants generally grow between 0.3 m to 1.2 m in height, although in ideal conditions they can reach heights of nearly 2 m.
Numerous stems can grow from one central root, with a cluster of flowers growing on top of each stem.
Download the Tansy Ragwort brochure here.
There are two weeds found in the Fraser Valley that are commonly mistaken for Tansy Ragwort, however, they do not share the same invasive characteristics.
Common Tansy has a button-like yellow flower with no distinct petals.
St. John's Wort has a yellow flower with only five petals, and a distinctive centre with multiple antennae-like structures.
BC Ministry of Agriculture and Lands (Pest Management)
Invasive Plant Council of BC
Gardening in Western Washington - Tansy Ragwort: A Noxious Weed Threatening Livestock