Fixing an Over-Fertilized Lawn: Flush, Wait, Reseed If Needed

Reader Question: Spreader Broke, Dumped Summer Fertilizer—Lawn Yellow/Burnt

"My spreader broke and over-fertilized part of the lawn. Some areas yellow or burnt. How to fix?"

Expert Answer: Aggressive Irrigation Is the Only Remedy

• Water deeply (1–2 hours per zone) every 2–3 days for 2–3 weeks to leach salts below root zone.
• Do not mow burnt areas; let grass recover if alive.
• If grass greens up in fall when temperatures cool, overseed thin spots.
• If no recovery by early fall, plan for slice-seeding or sodding.

There's no "antidote" product—only dilution and time. The heavy watering may encourage fungal disease, so monitor and treat if needed.

Prevention

Calibrate spreader before every use. Use a deflector shield near edges. Consider a drop spreader for better control.