Can anyone tell me what these are? They started out as a small area in one corner of my yard but have spread to cover half the yard within a week. I'm in Northern VA right outside of DC.
Thanks for the info, and quick reply! I have a grub problem every year so I was going to put down some Grub-Ex today. Is this a good idea if the earthworm castings are good for the soil?
Cicada wasps nest in the ground too; last year we had many sand Cicada wasps and mounds all over our lawn but their entrance holes are larger than the ones that ground bees make.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!
Worm casts for me as well. Think carefully before you put anything in the area as there are lots of beneficial insects etc in your lawn as well as some pests.