There's been some discussion here about this too, that CERTAIN potatoes make off the stems but not all. The ones sold as seed where I get them, Kennebec, Pontiac, Yukon gold- have never shown signs of it.
I am thinking of expanding the garden by digging this winter when I can and putting my sprouted stored potatoes there. I'm down to about one meal of large potatoes. Some of my most beautiful potatoes this year were from a sprouted potato someone gave me in 'compost' from their kitchen, that I found growing happily and replanted.
