How deep can earthworms go and still survive? That’s what Hubby and I were discussing. He dug even deeper than the 1 foot to 18 inches in some places and still no earthworms. I don’t recall how deep he did go.
It was a few days after several recent rains though.
I don’t know how deep they go, but remember seeing them in post holes when I was a kid on the farm. You’d get down to 2 1/2 - 3 feet in the clay and find them in the moisture. I also remember busting up and old slab in a pig pen and we found plenty under that. Saved a bunch and went fishing later in the day.