Scientific NameLythrum salicaria
Other Common Names:
Seedlings have ovate hairless cotyledons 3-6 mm long and 2-3 mm wide. Mature plants reach heights of 50-150 cm tall and arise from thick fleshy roots. Stems have several branches covered with soft hairs and are capable of spreading by bits of stem, root and seed.
Leaves slightly hairy are lance shaped and can be opposite or in whorls of 3.
Found in moist places, purple flowers, and opposite leaves.
Flower Seed Head
Flowers appear in spikes on the end of branches and are purple with 5-7 petals, 7-10 mm long.
Fruit are 2 chambered capsules containing several seeds. A single plant can produce as many 2 million seeds a year.
Found throughout the northeastern United States this plant can destroy wetlands taking the place of native vegetation. This species is a problem for cranberry bogs, spring flooded pastures, ditches, canals, and roadsides.
upright and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
Stem Cross Section
round or oval