Common Tansy

(Tanacetum vulgare)

General description:

Perennial herbaceous plant, 2-5’ tall, erect, unbranched except for the flower head, stems slightly hairy, woody and purplish red near the ground.

Ecological threat:

  • Invades well-drained or sandy soils in open disturbed areas, roadsides, fields, prairies, pastures, and hedgerows.
  • Once established, infestations of common tansy displace native vegetation.
Black swallow-wort
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Black swallow-wort

(Vincetoxicum nigrum)
Leafy Spurge
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Leafy Spurge

(Euphorbia esula)