Warning: toxic to humans and livestock - wear gloves when handling common tansy

Common tansy (Bitter buttons, Cow bitter, Golden buttons) is a herbaceous plant that was introduced to North America in the 1600s for medicinal purposes. It is native to Europe and Asia. It spreads via roots and seeds that can remain viable for up to 25 years.

Tansy is often found growing in sunny, disturbed areas such as roadsides or pastures where it can displace native vegetation. Infestations in rangeland can be toxic to livestock, and it’s reported that dairy cattle consuming the leaves often have unpleasant tasting milk. Common tansy is designated as a Regional Noxious Weed by the BC Weed Control Act.
~ Invasive Species Council BC

RE_2023-09-06 11-48-46