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.
When to Harvest Potatoes image by oldgreyseawolf/morguefile.com. Potatoes are a tuber vegetable that thrive during the cooler weeks of the growing season. Potatoes grow best at soil temperatures of 60 to 70 degrees Fahrenheit. Soils over 80 degrees are not conducive to tuber formation, so gardeners must plant potatoes as early as possible in the spring to harvest before the soil warms.