[oldtimer]

its my 1st year with my plot my potatoes have just come through when do i bank up the rows and how high
thanks
george

[DD.]

I do mine about 3 times during the growing season, 2" - 3" at a time, when the haulms, (the stems) are long enough so that they don't get covered totally. (Unless there's a frost predicted!).

Others WILL differ in their method.