Japanese Stiltgrass
Microstegium vimineum · Warm-season annual, C4
AI-generated identification · may be incorrect
Grass Category
Invasive
Hardiness Zones
USDA Zones 5 through 9, highly adaptable to temperate and subtropical climates.
About This Grass
Leggy, delicate-looking annual growing 12 to 3 feet tall with pale green, lance-shaped leaves and terminal spike-like racemes.
Blade Characteristics
Wide, flat blades up to 3 inches long and half an inch wide with an off-center silvery midrib on the upper surface.
Growing Information
Growth Habit
Stoloniferous, sprawling mat-forming annual that roots at the nodes.
Sunlight & Water Needs
Thrives in deep shade to full sun in moist, fertile soils, but tolerates a wide range of moisture levels.
Mowing & Maintenance
Readily controlled by frequent mowing or hand-pulling before seed set in late summer.
Identified on 10/20/2026