Got some small coffee-cup dirt mounds about 1.5" tall scattered over my yard. No signs of underground tracks, so I'm sure it's not moles, etc. I scraped away the dirt and found a slightly smaller than dime-sized hole. I'm wondering it it could be those cicada wasps since I saw one burrowing down in the backyard about a month ago.
I just don't know what it could be, but I've pressed down the dirt mounds and they keep re-appearing every day. Anyone have a clue?? I need to get something down before they ear every bit of my new grass seedlings.
According to Google, that's exactly what you've got. You might try an application of grub killer drop spread over your lawn seedlings soon as they get more mature (when you can mow the lawn).
I could never see what it was, so I put out an application of grub killer and the borrowing seems to have stopped. Now I have to put out more grass seed, if I hav enough time before it gets cold.
We still have lots of warm,grass-sprouting weather ahead with a few cold snaps that shouldn't hurt the seedlings, just slow them down. Make sure you keep them moist.
