Winds NNE at 10 to 15 mph. Evening: Cloudy skies this evening will become partly cloudy after midnight. Low 44F. Winds ESE at 5 to 10 mph.
But it can take 70-90 or more for potatoes to mature. This depends on the variety. The potatoes can carefully be harvested at 7-8 weeks for a early harvest of small potatoes. For full grown potatoes you would harvest in the fall when the leaves turn brown. But it can take 70-90 or more for potatoes to mature.
During that time, some moisture will dry from the potatoes, and their skin will become firmer. Potatoes naturally form sprouts 30 to 140 days after harvest. You can delay the sprouting by storing your potatoes in a location with 40 to 45 degree Fahrenheit temperatures and 85 percent humidity. Keep them away from light sources, which trigger sprouting.