Our Zoysia grass is dying. It started in a small area and keeps spreading. We were told it probably was grub worms so we sprayed two times with Permetrol and watered afterwards. That was about 2 weeks ago and the grass is still dying. It just keeps moving out from the original dying spot. What do you think is the problem and how do we deal with it? We have a lot of money and time invested in our lawn and are afraid we are going to lose it all.
Certified GKH Gardening Expert
It is likely a fungus. These articles should help pinpoint the most common issues: https://www.gardeningknowhow.com/lawn-care/specific/zoysia/facts-about-zoysia-grass-zoysia-grass-problems.htm, 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 If you still believe the problem may be attributed to grubs, then this article should help with that: https://www.gardeningknowhow.com/plant-problems/pests/lawn-grubs-how-to-get-rid-of-grub-worms.htm