6. Wood Box
Following instructions found online at irisheyesgardenseeds.com/growers1, build a bottomless square box (I used lumber from discarded pallets). Plant the same as for a raised bed. The box is designed so additional slats can be screwed to the sides as the plants grow and soil is added. In theory, a bottom slat can be temporarily removed to facilitate the harvest of new potatoes. For the final harvest, tip the box and dump out its contents.
Pros: This is another raised strategy for growing potatoes where the garden soil is of poor quality. Yield was similar in quantity to that of a raised bed.
Cons: A lot of time and effort went into the construction of the box. I felt the results did not justify the effort.