An errect perennial with flat-topped clusters of bright orange-yellow, button-like flower heads.

Head 1/2" wide, all of disks flowers, with occasional ray-like extensions developing from marginal flowers.

4-8" long, pinnately divided into linear, toothed segments, strongly aromatic.

no

2-3'.

July-September.

Roadsides, edges of fields, waste places, and shorelines.

Originally from Europe, this plant often escapes from gardens. It was used medicinally for centuries to induce miscarriages; the results were sometimes fatal, as the bitter-tasting leaves and stem contain tanacetum, and oil toxic to humans and animals. The inflorescences are often dried for use in winter bouquets. Eastern Tansy (T. buronense). with long-hairy leaves and larger flower heads, is found on northern beaches and shorelines across Canada and in Wisconsin, Michigan, and Maine.