KENAI PENINSULA COOPERATIVE WEED MANAGEMENT AREA

Common Tansy

       

Common Tansy (Tanacetum vulgare) Sunflower family

Perennial, spreads by seed and by short rhizomes, forming dense clumps. Flat-topped cluster of button-like yellow flowers lacking petals. Numerous composite flower heads (20 to 200 per plant). Leaves alternate and deeply divided into narrow individual leaflets, giving a feathery appearance.Plants grow to five feet tall. Strong odor.

Mildly toxic to grazing animals. Used commonly in gardens where it tends to spread into other yards and natural areas.This plant can restrict the flow of water along streams.

Excluding flower gardens, tansy is uncommon in the Kenai Peninsula. Grows along roadsides, river and stream banks, and beach meadows.

More information

Distribution

UAF Cooperative Extension Service National Resources Conservation Service Alaska State Parks U.S. Forest Service Homer Soil and Water Conservation District Kenai Peninsula Borough