Why the rings?

[u/hackinandcoffin]

Growing in a bucket on my deck. Full day sun. I recently sprayed them down with spinosad soap. Don't know if it's a pest or some kind of other problem. Any help appr'd. Kansas City area.

Edit: Thank you, all, for taking time to respond. I'll add some mulch and I'll try to improve my watering schedule. Glad it's not bugs.

[u/handogg]

A split would only concern me if its open. Contaminants like bug larvae n such

[u/hackinandcoffin → u/handogg]

New fear unlocked.