I am trying to get ahead of a grub infestation of my mostly fescue lawn in Lilburn, GA. I had moles and grubs last year. I have a spreader and Scotts GrubEX but not sure when to apply. The bag says spring to early summer. I reseeded in early October 2020. This week I dug up random very small areas that did not reseed. In most I found at least one 1/4 inch grub or what I think is a grub (white and curled). I would appreciate any recommendations, especially in which month should I apply the Scotts GrubEX Season Long Grub Killer which states it kills and prevents grubs for up to four months. THANKS!!

The symptoms you describe sound like hellebore black death… Eventually the plants die. https://www.rhs.org.uk/advice/profile?pid=167 In my experience… hopeless… Nothing can be done except not planting them again.

Please send some in focus photos of the center of the plant to Georgiagardener@yahoo.com