Oberon46,
A storage shed stood on the site where the eBuckets are in the pic. I wanted to keep the soil as pristine and weed free as I could until I could build my raised beds on the same site. I laid down weed block. The plywood was to set the eBuckets level on a bumpy patch.
If I had my preference, I'd set all my eBuckets on another concrete pad. I had one when I was gardening at another location. I loved that the eBuckets all sat level, and, at the end of the day, all I had to do was hose off the pad. Everything was so neat and orderly. Nice even rows of eBuckets, and, I was able to sprinkle some Sluggo Plus around the perimeter of the pad.
No roly poly pill bugs or slugs...ever...