1, planting time. Sweet potato planting time is mainly concentrated in the spring, usually between April and May, the best sowing period in mid-May, when the temperature is stable above 15 ℃, which is conducive to sweet potato rooting and sprouting. Sweet potatoes can also be planted in the fall, especially in southern regions with warm climates, usually from July to August. In some areas, such as those with favorable climatic conditions, planting can even be done all year round.

2, planting method. The planting method of sweet potato includes selecting robust, disease-free, large-sized seed potatoes with many bud points, and before planting, soaking the seed potatoes in Dorella solution for about 10 minutes to sterilize them. When planting, the sweet potato seed potatoes are placed in holes dug 30 to 60 centimeters apart, to a depth of 3 centimeters above the base of the plant to the root of the tuber, and then the stems are covered with about 1.5 centimeters of soil. The leafy part of the sweet potato will grow vines outward, while the roots will grow tubers 15 to 30 centimeters deep in the soil.