The normal spacing of 1,4, 9, 16 is a little different for potatoes. I’ve been asked how much to expect from a single square of potatoes. This is what I got when I harvested last week. Eight pounds! For the past 3 years I’ve tried without much success to plant these in grow bags. Much has been written about how to do this, and some have reported much success. I’ve never been able to do it. I have, however, always been able to grow potatoes in my SFG soil. Because they take 3-1/2 months from seed to harvest, I thought switching to grow bags would give me the same yield and save room in the SFG beds. It didn’t. I don’t even hill the potato seed. I simply put them in the soil about 6 inches deep, cover with soil, and start watering. Red pontiac’s. They are so good. I’m going to attempt growing some right now in the hope that I can have baby new potatoes for the winter.