Yukon Gold wins the race to the top...

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..of the potato bin. Since they're taller than their pots, I won't need to hill them again. Now it's all hanging around and letting them grow leaves until they flower, at which point early potatoes like YG will set tubers. Those will keep growing until something (sometimes frost, but also sometimes the gardener) kills the top of the plant. Then you leave them alone for two weeks to give the potatoes a chance to firm up. After that, dinner.