Q.Zoysia Grass – Large Section Seems Dead
I had a beautiful zoysia lawn until this spring. I saw a very small section last year that turned brown, figuring that it would come back this year, but instead, a very large section, about 15 feet by 20 feet, never turned green and looks dead. There are sections of the zoysia that look fine, but a huge area is brown and looks dead. What can I do? I thought I would seriously rake it, hoping that there might be too much thatch, but I do not think that is the problem. Please advise.

Certified GKH Gardening Expert
Your grass may have some type of fungus, which requires a fungicide.
The following articles should be of some help to you: https://www.gardeningknowhow.com/lawn-care/specific/zoysia/zoysia-diseases-tips-for-dealing-with-zoysia-grass-problems.htm
https://www.gardeningknowhow.com/lawn-care/lgen/grass-fungus.htm