answers to your questions continued;
mole infestation
UPP2; yes it can work.
no gophers in ohio, woodchucks/groundhogs are a pain.
I`m not moving,not putting plts into a grn.hse., not soil problem.UPP3, planting technique.I can sink pots into any soil type, got `em all, hi water, lo water, sand, clay,rich organic humus. all on my lot.If water table is hi, water will level off to it`s surrounding level filling the container no matter where the holes are. Heavy clay drains much slower if at all. Technique solves that problem.UPP4; Feeder roots near top need to spread, anchor roots on bottom size [need to be considered]. Size of holes matter. Here is where my post appears. After that ......
[Edited by zuzu to remove huge and annoying expanse of blank space]