ok so i got antsy and curious and wanted to make sure my potatoes are actually growing in the ground... i followed a potato stem down and saw a fat yukon gold with no skin... so far so good. few questions:
1. when and how do you know the potatoes are done growing?
2. which are ready first, yukon gold or kennebec?
3. i can leave them in the ground the whole summer without any damage to the tubers?
4. why do cutting the tops off before harvesting create the skin on the potatoes?