Potatoes can use up a lot of space in the garden. We almost always have an abundance of old pallets kicking around, so I decided to repurpose some of them. This is a wonderful space saver and if done correctly, can yield about 100lbs of potatoes.
Remove all of the boards leaving only the frame of the pallet. On the inside, nail four 2x4's (I used 2x2's but 2x4's will be stronger) this will give you a place to nail the boards that you removed from the pallet. You will need to dismantle 2 - 4 pallets depending on the condition of the wood.
Step 2: Fill With Manure, Compost, Dirt and Seed Potatoes
Fill with a layer of manure, composted soil, dirt and some seed potatoes. 12 - 16 seed potatoes should give you a good yield.
Step 3: Add More Boards and Soil.
As the potatoes grow, add a few boards to the box and cover the rising plants with more manure, compost and dirt. Continue to do this until the box has been completely built.
If you use screws instead of nails you can unscrew some of the bottom boards and collect an early potato harvest.