Barnyard Grass
Echinochloa crus-galli · Warm-season, Annual, C4
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed Grass, Agricultural Weed
Hardiness Zones
Thrives in USDA Hardiness Zones 3 through 10, wherever summer temperatures are warm.
Grass Family
Poaceae, subfamily Panicoideae, tribe Paniceae
Variety / Cultivar
Wild type (no specific cultivated varieties typically maintained as turf)
About This Grass
An aggressive summer annual weed with coarse, flat leaf blades and characteristic branched, dense panicle seed heads that often droop slightly. Stems are often flattened near the base and can have reddish or purplish tints.
Blade Characteristics
Coarse blades, 4-15 mm wide, flat, smooth to slightly rough, with a prominent midrib and pointed tips. Rolled in the bud (vernation). Ligule is absent, auricles are absent.
Root System
Fibrous root system, occasionally producing roots at lower nodes if stems touch moist soil. Fast-establishing from seed in disturbed areas.
Growing Information
Origin Region
Native to tropical and temperate regions of Eurasia; now cosmopolitan and widely naturalized globally.
Growth Habit
Bunch-type, erect or decumbent, growing up to 2-4 feet tall, forming coarse clumps.
Sunlight & Water Needs
Requires full sun. High moisture needs, frequently found in wet soils, poorly drained turf, ditches, and agricultural fields. Moderate drought tolerance once established.
Mowing & Maintenance
High maintenance weed; difficult to control by mowing alone as it can adapt its growth to survive low cutting heights. Requires selective herbicides or manual removal in turf settings.
Special Characteristics
Poor wear tolerance for turfgrass use; highly competitive weed that crowds out desirable grasses in lawns, gardens, and crops. Resilient seed producer.
Ecological Information
Often considered a troublesome agricultural weed in crops like rice and corn, but provides some food value (seeds) for birds and waterfowl in natural wetlands.