A couple of months ago I did a post about growing potatoes in cinder blocks. https://steemit.com/gardening/@simms50/cinder-block-potatoes
I have done this a couple of years now and what I have found is that I needed more water for these potatoes than the ones that were grown in the ground. I will be growing more potatoes next year, but I will be sure to give them more water than what I did this year. Thanks for posting and sharing!