The inflammation in joints causes spasms in the muscles adjacent to the joints, which is probably why people have hand cramps, explained Richard Brasington, MD, a rheumatologist at Barnes-Jewish Hospital and Washington University in St. Louis.
Grow 1 plant to yield 5 to 10 potatoes. Yield 10 to 20 pounds per 10-foot row. Space seed potatoes 10 to 14 inches apart in trenches 24 to 34 inches apart.
In this case, harvest them about a week after the potato plant flowers first appear. New potatoes only produce a couple of handfuls of potatoes per plant, so dig up the whole plant. Source(s): http://www.garden.org/foodguide/browse/veggie/potatoes_harvesting/574.