I believe the misses and my son hill's them three or four times during the growing season. I think the potatoes grow upwards and sideways thats why we have to hill them often. Between the hills you can put the grass clippings to keep the weeds down only if you don't use weed killer. I just don't trust it not getting into the food. I try to not use any killers at all. I was told to keep on reseeding and the grass will choke out the weeds over time. So far its working for me. Bill
The soil here is full of clay so i mixed it 50-50 peat moss and soil first, they like lots of water but good drainage.
I dug a ditch about 6 inches deep, planted the potato seeds with the eyes facing up.
Once the plants got to about 2 inches tall I started mounding dirt around the base, loosely.
I built a chicken wire fence around the potatoes to allow me to add more material and they keep growing.
You only NEED to hill when the potatoes start growing near the soil top. The covering doesn't produce more potatoes. It keeps the potatoes that grow healthy and growing.
I continue covering more because I add potatoes halfway through the season. I'm not sure if I'll do that as much this year because I have peas growing with my potatoes and am hesitant to disturb them. But there are 3 layers of potatoes growing on top of each other.