being new to this game.how many times do you earth up potatos ??? ??? i have done it three times so far.every time i go up to the allotment they have grow so much.
Once usually. As long as the ridge is 9-12" high you'll be ok.
If you've done it three times you should be in for a good crop as the tubers form on the stem... :)
I do it till there is no more soil to move :) and then I am going to try to mulch them to exclude the light and keep them nice and cosy. I need to do it again this weekend...