Plantoid those are exactly what I need and just the right height. I could work from a sitting position there. All I need now is someone to build them for me who won't charge and arm and a leg. I need to ask a few bricklayers. I have someone dismantling the old ones and now dealing with the problem of where to keep the soil out of them until the new ones are built.
Spandit, they look like curly kale to me but I could be wrong.