06/16/2026
Not every brown patch is caused by drought.
Brown patches during summer can come from several different causes.
Two of the most common:
• Heat stress
• Grub damage
The challenge is that they often look very similar at first.
Heat-stressed turf usually recovers when watering conditions improve and are circular in appearance.
Grub-damaged turf often continues declining because the root system underneath has already been compromised. These yellow spots are more of a puzzle shape and random.
Proper diagnosis matters before simply increasing irrigation or replacing turf.