Cover the potatoes with compost from the pile you brought from the driveway. Leave about 3-6″ of the plant exposed.
Gently fill the box to the top.
This box is an experiment. I built it a few years ago but it was too late in the year to get the potatoes I had to grow.
This year we’re going to try it out with red and yellow potatoes to be planted in the bottom soon. As it grows I’ll add layers and build up to the top.
When it’s time to harvest, the box is designed to spread apart and lift up. Hopefully we can lift it incrementally and harvest from the bottom. We’ll see how it works.