Common Tansy
(Tanacetum vulgare L.)

Photo from Weeds of the West, revised edition

Toxicity: Can cause abortions in humans if ingested; will cause liver damage in some livestock, but it is largely palatable.

Growth Habit: Perennial, erect, bushy, to 6 feet tall.

Leaves: Dark green, alternate, deeply divided into numerous narrow, toothed leaflets (fern like).

Stem: Purplish red in color

Flower: Yellow, button - like, without petals, 1/2 inch across in flat topped dense clusters.

Roots: Reproduces from roots.

Seeds: Yellowish brown with short 5 toothed crown.

Reproduction: Reproduces by roots and seeds.

Habitat: It is generally found along roadsides, waste areas, streambanks, and in pastures throughout most of the U.S. and Canada.

Biological Controls:

Herbicides: Tordon + 2,4-D, Escort