I have a tiny yard in the south and it’s pretty much paved so container is the only way I can go until (if?) I manage to buy a house with a plantable area. Currently have some citrus in containers producing, a bunch of basil, tomatoes, and some various sprawlers like squash. I wish I had the space to put them all in the ground but I gotta work with what I have. Usually use heirloom seeds or hardware starter plants but gotta pick varieties that are good for containers so I don’t get that many options. I figured that potatoes would still be productive in the seasons when tomatoes aren’t growing on the branches due to heat or cold but I could be wrong since i’m still learning a lot.
Most of the container potato setups I see use a lot of sand and straw which I thought would help with the fungal growth, though they’re usually set up in something like a large trash can with an air layer of insulation around since it hold heat less than rocks but the white block idea with sunken drip line sounds intriguing. We get a lot of clay in my area, but it’s also pretty rainy most of summer so I would probably need some sort of sensor in the soil to figure out when it’s dried enough for more watering. Thanks for the response!