Name: Susie Phoenix AZ (Zone 9a) Southwest Gardening~ moderator/ATP.
Very nice. I like the logs at the bottom! I envy you your leaves. Hard to find here in PHX. I'm sure the herbs will love it natural!
I'm reminded of watering a traditional Strawberry pot. We used to drill holes in a 2 inch PVC pipe, stick it well into the center of the pot. To water we'd fill the exposed top of the pipe then the water would seek into the depth of the pot. I wonder if that sort of watering would prevent even a little compaction?
Or when you plant it with adults around as well. All Euphorbias produce a sap that is toxic to some degree. It has accounted for many trips to the ER when folks handle it and then rub their eyes without washing their hands. People have also been poisoned to death by ingesting some of the Euphorbias.