Key Points Planting potatoes in the fall gives you a second harvest and fresher food as the weather cools. Fall planting is a smart way to extend your harvest, yielding a bountiful crop of fresh potatoes as cooler weather sets in. Ahead, experts explore the benefits of fall planting, specific techniques you need to know, and how to successfully cultivate potatoes for a late-season harvest. How to Select Potato Seed for Fall PlantingA seed potato is a piece of the potato tuber, or a small potato itself, that is planted to grow a new, genetically identical potato plant. Additionally, consider reaching out to local farmers or potato seed suppliers, as some sell potato seed year-round.