Johnsongrass
Sorghum halepense · Warm-season perennial, C4
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed
Hardiness Zones
USDA Zones 6-9, exhibits good cold and heat tolerance, goes dormant in winter.
About This Grass
Coarse, upright grass growing up to 7 feet tall with bright green leaves and a prominent white midvein. Produces large, open, reddish-purple panicle seed heads.
Blade Characteristics
Wide, flat leaf blades with pointed tips and a distinct white midrib tapering toward the collar. Membranous ligule without auricles.
Growing Information
Growth Habit
Aggressive rhizomatous and stoloniferous, forming dense clumps and expansive colonies.
Sunlight & Water Needs
Requires full sun and adapts to various soil types, highly drought-tolerant once established.
Mowing & Maintenance
High maintenance due to rapid growth; difficult to control and eradicate once established.
Identified on 10/17/2026