The potato section of the in-ground garden was layered with compost, tilled, and leveled off. A row was dug about 12 inches deep and the soil placed into a wheelbarrow.
A digging fork is used to loosen the soil in the trench to a depth of another 12 inches, which helps allow oxygen into the soil and permits the roots to penetrate easier.
I tried using a digging fork, but then opted to use our Mantis tiller. Held in place, it easily aerated the soil down another 12-inches. I double-checked with a digging fork to be sure.
Once the soil was aerated, fertilizer and compost were added and worked into the loosened soil.
The soil was really fluffed up by the Mantis, so I used a bulb planter to be sure the potatoes were planted 9-inches below the soil level. I used a 9-inch stick to check myself along the way.
Then the seed potatoes were spaced out 9-inch centers using the stick as a guide.
The center location of each row was marked along the edges with sticks so the next row could be measured out. The soil from the next row was used to cover the first. I tried to offset plant the rows, but found once they were covered, I had to guess the location.
Once the bed was planted, we added the reserved soil from the wheelbarrow, leveled it off, and laid soaker hoses:
The bed was then mulched with straw to help conserve moisture and keep the weeds down:
I didn’t follow the “Grow Biointensive” method exactly (double digging is HARD). I also didn’t use a digging board, which is recommended to help distribute your weight so you don’t compact the soil. We have one more potato bed to plant and I am thinking of modifying the method a bit further.