The leaves of Sophora alopecuroides containing tannic acid can be used to make dyes and medicines. The whole plant is elegant in shape, and its posture in the water is very beautiful, not losing the precious aquatic plants imported from aquarium shops, which is quite ornamental.

Cynanchum paniculatum is a perennial herb living in fresh water, with stems and leaves clustered from the base. Tannin cells in leaves are bitter, thin, banded, slightly pointed at the front end, with fine teeth at the edge, 30 ~ 70 cm long and 4 ~ 9 mm wide. Female flowers are axillary, with linear pedicels and spiral discs, which can reach 50 cm long. Flowers bloom on the water, with 2 bracts, 3 sepals, green, 3 pistil stigmas, purplish red and 3 staminodes, and the fruit ripens in water through hydraulic pollination. Roots are fixed in the soil.

It is a perennial herb with oval bulbs and light brown skin. The plant height is about 15-30 cm, and the plants are clustered with several basal leaves, which are flat, linear and dark green, much like leeks. The stem is pulled out from the leaves, and a flower grows at the top, pink, 6 petals, funnel-shaped, perianth tube is about 2㎝, lobes are obovate, the apex is blunt, and the flower is larger. Capsule, subglobose. The seeds are flat and black. The leek is large in shape, pink and slightly curved in petals; Small leeks are pink, and every bulb can blossom. That cluster of flowers shines in the bright sunshine, and everyone loves it. The flowering period is from June to September. Like warm, humid, sunny, but also resistant to semi-shade, suitable for garden flower beds or potted plants. After a batch of flowers wither, water should be controlled for 50 ~ 60 days before normal water supply is restored. This dry-wet alternation can promote multiple flowering, and each plant can bloom 2 ~ 3 times a year.