2. Sweet potato belongs to Convolvulaceae, and belongs to the same family as water spinach and morning glory, both of which are morning glory. Sweet potato is a short-day crop. Whether it blooms or not depends on the length of sunshine. When the sunshine is long, sweet potatoes generally bloom and seed. For example, in the north, there is no long sunshine in the south, only sweet potatoes bloom, but there is no sweet potato seed. Therefore, there is no seed in sweet potato flowering, there is a difference between north and south, there is a difference in the length of sunshine, and there is no absolute result.
3. Planting sweet potatoes with seeds in rural areas is generally traditional planting, breeding and cutting.