Knotweed Infested Lawn
Polygonum aviculare (weed) mixed with turfgrass · Cool-season turf mixed with summer annual broadleaf weed
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed
Hardiness Zones
USDA Zones 3-9
About This Grass
Dense turf heavily invaded by prostrate knotweed showing small oval bluish-green leaves and wiry stems.
Blade Characteristics
Fine turfgrass blades obscured by small, oblong, blue-green weed leaves with prominent silvery membranous stipules.
Growing Information
Growth Habit
Prostrate, mat-forming weed mixed with upright turfgrass
Sunlight & Water Needs
Thrives in full sun and compacted, poorly drained soils with low fertility.
Mowing & Maintenance
High maintenance required; needs aeration and weed control to manage heavy knotweed infestation.
Identified on 10/3/2026