Lilac and white, shaped like a small petunia, stamens and flowering plane flush, fragrant, can be used as medicine, can also be burned with sweet potato vine as a small dish. Cymes axillary, with 1-3-7 flowers gathered into umbels, peduncles 2-10.5 cm long, slightly stout, glabrous or sometimes sparsely pilose;

Bracts small, lanceolate, 2-4 mm long, apically awned or cuspidate, caducous; pedicels 2-10 mm long; sepals oblong or elliptic, unequal, outer sepals 7-10 mm long, inner sepals 8-11 mm long, apically Cuspidate, glabrous or sparsely ciliate;

Sweet potato is a high-yield and well-adapted food crop, closely related to industrial and agricultural production and people's lives. In addition to the tuber for staple food, but also food processing, starch and alcohol manufacturing industry is an important raw material, roots, stems, leaves and is excellent feed.

Extended information:

Plant growth to meet the demand for a variety of fertilizers and nutrients in different growth periods, applying the right amount of nitrogen fertilizer can promote the growth of leaves and stems and branches, and promote photosynthesis.

The more branches, the more vigorous growth of the potato field can be cut off with scissors two or three branches, so that the nutrients back to the potato to get more nutrients. Topping can regulate the operation of nutrients, and encourage nutrients to be transported to the roots.

When the potato seedling grows to 40-60 centimeters, remove the tip of the shoots, and also remove the tip of the shoots when the branches grow too much.