Sweet potatoes are harvested before or after the first frost.

Usually, sweet potatoes are harvested one week before the first frost. Sweet potato is also called sweet potato. Sweet potato planting has two stages. In spring, cuttage planting is usually carried out in early April-May. Then it can be harvested in late August-September. The second stage is sowing in late June, and 10 can be harvested in the middle and late June. In fact, the planting time of sweet potatoes is different because of the different climate and weather.

Generally speaking, farmers had better harvest sweet potatoes before the first first frost Festival. People often say that "the cold dew is early, and beginning of winter is late, when the first frost is harvesting potatoes", which means that the sweet potato pieces are still relatively small in the cold dew solar terms, and there is more time to eat fresh sweet potato leaves at that time.

Therefore, it is best to harvest sweet potatoes within one week before the arrival of the first frost. At this time, the sweet potato is fully mature, and the sweet potato yield reaches the best. On the other hand, the sweet potato should be harvested in advance before the first frost comes and collected in the cellar in time, so that the sweet potato can avoid frostbite in cold weather and can be preserved for a longer time.