Barnyard Grass
Echinochloa crus-galli · Warm-season, Annual, C4
AI-generated identification · may be incorrect
Grass Category
Weed Grass / Agricultural Pest
Hardiness Zones
Widely distributed across USDA Zones 3 through 10 as a warm-season summer annual.
Grass Family
Poaceae, subfamily Panicoideae, tribe Paniceae
Variety / Cultivar
Wild type (no specific commercial cultivars widely used)
About This Grass
An aggressive, coarse annual grass that can grow from 1 to 5 feet tall. Stems are often flattened near the base and sometimes tinted reddish or purplish. It forms loose clumps and produces a distinctive panicle inflorescence with crowded, often bristly spikelets.
Blade Characteristics
Coarse blades, typically 6 to 15 mm wide, flat, glabrous with a prominent midvein. Leaf sheaths are open and generally smooth. Ligules are characteristically absent, and auricles are absent.
Root System
Fibrous root system with moderate depth. Establishes rapidly from seed in disturbed soils, though it lacks creeping structures like rhizomes or stolons.
Growing Information
Origin Region
Native to tropical and temperate Asia, now naturalized worldwide
Growth Habit
Bunch-type (clump-forming) annual with an erect to spreading habit
Sunlight & Water Needs
Requires full sun and thrives in moist to wet soils, frequently found in agricultural fields, ditches, and disturbed areas. Tolerates temporary flooding and has low drought tolerance once actively growing.
Mowing & Maintenance
Not maintained as turf; controlled via herbicides, hand-pulling, or frequent mowing in agricultural and landscape settings.
Special Characteristics
High seed production, rapid growth rate, and ability to outcompete crops for nutrients and water. Exhibits resistance to certain herbicides in agricultural contexts.
Ecological Information
Introduced weed species in North America. Provides minimal wildlife food value compared to native grasses but can serve as cover. Known for invading wetlands, gardens, and crop fields.