I'm in St. Louis, and we have been experiencing drought and 100+ degree temparatures. I've been watering my lawn regularly, but I'm getting some signficant brown patches. Someone told me that there is some sort of "bug" in our area that damages zoysia lawns, and I'm trying to find it whether we may have that problem.
Problems With Zoysia Grass
Certified GKH Gardening Expert
In that kind of heat, even with regular watering, the lawn may be going dormant as a way to protect itself.
The disease that you were told about is called, aptly enough, Brown Patch. This article will help you to determine if it is brown patch and how to control it: