Smartweed or Knotweed relative
Polygonum species · Warm-season, annual broadleaf weed, C3 or C4 varies
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed
Hardiness Zones
USDA zones 3 to 10
About This Grass
Low-growing broadleaf weed with bright pink to purple cylindrical flower spikes and swollen nodes.
Blade Characteristics
Leaves are lanceolate, smooth-margined, alternate, with distinct membranous sheaths enclosing the stem.
Growing Information
Growth Habit
Stoloniferous and spreading, forming dense ground cover
Sunlight & Water Needs
Thrives in full sun to partial shade with moist to wet soils.
Mowing & Maintenance
Hard to control by mowing alone due to low-growing prostrate stems; hand pulling required.
Identified on 10/19/2026