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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.
Mid season: How long does it take to grow potatoes in mid season, the duration is from 16. To 17 weeks to harvest after planting, you should able to enjoy last week of June to the first week of august. These potatoes are used for mainly salad, steaming, mashed.