September’s Weed of the Month, common tansy (Tanacetum vulgare), is a highly invasive perennial plant native to Europe and Asia. It was brought to North America for medicinal, culinary, insect ...
The issue: Common tansy (Tanacetum vulgare), a creeping, spreading perennial from Eurasia, was introduced to the U.S. as an ornamental plant and for medicinal purposes. Common tansy is one of the ...