Russian Knapweed

Acroptilon repens

  • A perennial weed that spreads by root and seed
  • Grows two to three feet tall
  • Produces small pink, white, or lavender flowers during summer months
  • Upper part of root is dark brown to black in color
  • Grows in dense colonies along roadsides, riverbanks, and ditches, and in pastures and waste places
  • Cut or mow prior to seed set to reduce current year’s growth; will not kill plants
  • Chemical controls are needed