Tansy Ragwort

( Senecio jacobaea, Jacobaea vulgaris )

Dark green leaves on top with whitish-green under sides; lower leaves have white. cobwebby hairs
Flower in clusters on stout, leafy elongated stems
Numerous bright-yellow flowers; each flower has approximately 13 petals
Height 3 to 6 feet

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Type	Information
Toxicity	Toxic. All livestock, most especially cattle and horses.
Control	Hand-pulling, biological and herbicide. Contact your County Weed District or local Applicator for more information.
Habitat	Grasslands, disturbed areas, forests, pastures, rangelands and clear-cuts.
Root	Taproot with some lateral roots.
Leaf Shape	Deeply lobed with ruffled edges.
Lifespan	Biennial; two years to complete life cycle.
Priority 2A Weed	Common in isolated areas of Montana.
Similar Looking Plants	St. Johnswort and groundsel.
Important Information	Tansy can re-grow if the roots are broken off or anytime the plant is cut. Covering the site with mulch will help prevent new germination. Leaves produce strong odor when crushed.