I’m trying out one of the grow bags to grow some potatoes this year. I used the Geopot, but there are others on the market. The porous fabric bag allows moisture to drain out easily and provides good air flow for roots too. I put a couple inches of soil on the bottom of the bag, planted three seed potatoes, and then covered them with soil. Once the plants leaf out and grow to about 6 inches, you add another layer of soil, burying half the plant. Supposedly, you can then harvest potatoes at each layer. We’ll see if that’s what actually happens.