Return to weeds

Johnsongrass (Sorghum halepense) may reach a height of 3½ feet and competes heavily with other plants for nutrients and water. It reproduces by seed and perennial rhizomes, making it difficult to control.

Johnsongrass foliage and stems.

(Photo: Chris Evans, Illinois Wildlife Action Plan, Bugwood.org)

Johnsongrass growth habit.

(Photo: James H. Miller & Ted Bodner, Southern Weed Science Society, Bugwood.org)

Management:

• Post-emergent herbicides applied persistently and repeatedly after germination are most effective on seedling Johnsongrass.
• Herbicides selective for grasses can also be applied.
• Once established as a perennial, control is difficult.

Return to weeds