1. a coarse annual grass that spreads rapidly and is considered a weed in lawns and gardens

Examples

• The crabgrass invaded our beautiful lawn over the summer.
• She spent hours pulling crabgrass from the flower beds.
• Pre-emergent herbicides can prevent crabgrass from germinating.
• The homeowner’s association requires residents to control crabgrass in their yards.
• Crabgrass thrives in hot, dry conditions where other grasses struggle.
• Regular watering and fertilizing can help your lawn compete against crabgrass.