We are doing something different this year with our potatoes. Planting in old used car tires. So far doing GREAT! I will let you know how it all turns out. We planted along our garden fence. Used 13 tires. We dug and tilled the ground under the tires as well as filling the tires with soil. If the plants inside the tires are doing as well as the potatoes plants, then our yield will be fantastic. Keep your fingers crossed and we will let you know how it turned out in the fall!
I plant spuds in cardboard boxes . . . cardboard breaks down in about 3 months . . . so, just dump the spuds out and compost the cardboard.
I’ve done this in the past using a cage (the method described in the above OTGN story). But rather than backfilling, I planted the seed potatoes around the perimeter of the cage and kept going up, planting another layer about every 8″ and putting a thin layer of straw around the outside as you go upwards to retain the soil mix. I’ve gone as high as 4 1/2 to 5 feet. The potatoes grew out the sides of the cage. But this made it difficult to effectively water. So, I started using a 3″ section of PVC pipe placed vertically down the center of the cage. I drilled small holes toward the bottom section, gradually increasing diameter and amount of holes as I went to what would be the top. This kept all the water from running out the bottom. It also doubled my yields.