Diagnosing Grass Die-Back Over a Buried Drain Pipe

Investigate Before Replanting

A rectangular dead patch over a drain pipe suggests a subsurface issue. The pipe may be leaking, altering soil moisture, or the backfill may be poor. Grass may regrow each spring if roots survive, but summer heat stresses the compromised area.

Key Questions to Answer

• Is the pipe actively draining? How deep is it?
• What grass type are you growing? What is your exact location?
• Does the grass return each spring, or is it permanently dead?
• Is there sidewalk proximity causing heat/reflection stress?

Next Steps

Determine the root cause — drainage, soil compaction, pipe leakage — before choosing a grass variety. You may need to improve soil structure, adjust irrigation, or install a French drain. Only then select a tolerant grass.