The culprits are most likely lawn grubs, pests that live in the ground and consume grass roots.
The grubs themselves are the larvae of the Japanese beetle.
The beetles remain dormant during the winter and then begin laying eggs in the middle of July.
The grubs make their appearance in August and may even attract raccoons and skunks, which feed on the grubs and may cause further damage to your lawn.
Examine your lawn carefully to determine that your lawn has grubs, and take steps to eliminate them.
1. Check the root area of brown spots of grass for curled, white grubs. The presence of more than five worms per ¼-square foot of lawn indicates a need for treatment.
2. Treat the worms at summer's end or in early autumn when they are small and near the ground surface.
3. Apply an insecticide, such as trichlorfon or diazinon, carefully following label directions. The ingredient portion of the label will list active ingredients.
4. Apply nematodes in liquid form or in a water mixture if you prefer natural grub treatment. These tiny worms kill grubs by releasing grub-hostile bacteria into the ground. Neem oil and milky spore also work to kill grubs. These three natural treatments, which are considered effective and safe, can be found at garden centers.
5. Repair your lawn in early autumn if it has suffered significant damage. Remove debris by raking, and water the damaged area to help grass recover. Reseed thin areas of lawn.
6. Prevent the return of grubs by keeping your grass at least two inches long. Beetles rarely lay eggs in longer grass. Overseed your lawn to encourage thick grass growth, which will help repel many beetles.
Image Credit: प्रतीक's
Written By: Shannon R