Scientific NamePolygonum pensylvanicum
Other Common Names:
Synonyms (former Scientific Names):
An up-right branched plant reaching heights of 1 to 4 feet with a shallow tap root and fibrous secondary roots. This species spreads by seed germinating in the early to late spring.
Usually lance shaped with very short stalks and one prominent vein in the center.
This species has large nodes where each alternate leaf is attached with a papery sheath surrounding the attachment.
Flower Seed Head
Found in a spike-like terminal cluster, flowers are usually pink to white.
Achenes house the shiny, black, flat, tear-shaped seeds measuring 3 mm.
Throughout the United States this plant is usually not a factor in turf. However, it plagues landscapes, horticultural, and agronomic crops as well as nurseries.
upright and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
shorter than leaf
Stem Cross Section
round or oval