Japanese Stiltgrass
Microstegium vimineum · Warm-season, annual, C4 grass
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed
Hardiness Zones
USDA zones 5 through 9, highly resilient and cold-hardy as an annual reseeding weed.
About This Grass
A delicate, sprawling, pale green annual grass growing 12 to 3M inches tall with a weak stem. Produces spike-like racemes in late summer.
Blade Characteristics
Asymmetric, lanceolate blades 1 to 3 inches long with a distinct silvery, off-center reflective stripe of hairs along the midrib.
Growing Information
Growth Habit
Stoloniferous, spreading rapidly via rooting at nodes to form dense, sprawling mats.
Sunlight & Water Needs
Thrives in deep shade to full sun and moist soils, highly adaptable to disturbed habitats.
Mowing & Maintenance
Requires frequent low mowing or herbicide control to prevent aggressive seeding and spread.
Identified on 9/28/2026