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Roundup Damage on Zoysiagrass: Never Spray 'Dormant' Warm-Season Grass

Zoysiagrass, centipedegrass, and St. Augustinegrass never go fully dormant. Spraying glyphosate in winter kills or damages them. Bermudagrass might go dormant after hard freeze, but check crown for green tissue first.

Repair

Plant zoysiagrass sprigs or plugs into dead spots.
Wait for warm soil (May) for best establishment.

Spring dead spots are classic glyphosate injury.

Zoysia Roundup damage

Zoysiagrass killed by winter glyphosate application.

About Gardening: Golf-Ball-Sized Lawn Holes in Michigan: Voles or Collapsed Mole Tunnels?; Identifying Lawn Tunnels: Moles vs. Voles in Virginia; Repairing St. Augustine Grass Damaged by 2,4-D Herbicide; Mystery Holes in Lawn: Birds, Moles, or Armadillos?; St. Augustine Frost Damage Recovery: Patience, Fungus Watch, and Delayed Fertilization; Diagnosing Sudden Lawn Browning: Weed Killer Drift or Fertilizer Burn?; Fertilizer Overdose? Go Organic to Rebuild Soil Health; Crabgrass After Fertilizer Burn: Wait and Pre-Emergent; Identifying and Recovering from Glyphosate Damage on Roses; Lawn Vandalism: Identifying Chemical Damage and Next Steps

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