Purple Loosestrife

Lythrum salicaria

  • A perennial that spreads by roots and seeds
  • Grows up to six to eight feet tall
  • Produces a spike of showy purple flowers in August
  • Stems have square edges
  • In the past, this weed was intentionally planted in gardens, but has now escaped and is very difficult to control
  • Grows in moist or marshy sites along streams or ditches, and in wetlands
  • Do NOT pull, dig, or cut the roots, as this may stimulate new growth
  • Chemical controls are needed