Sorrel is a perennial herbaceous plant of the family Sorrel. Its stems are erect or creeping, weak, multi-branched, and take root on the stolons. The leaves are basal or alternate on the stem, the leaves are small, oblong or ovate. The flowers are solitary or several clusters of umbel-shaped inflorescences, the peduncle is pale red, the petals are yellow, oblong-obovate, and the filaments are white and translucent. Capsule nearly cylindrical, ridged, pubescent. The seeds are oblate-ovate, brown or reddish-brown. Flowering and fruiting period 2 September. Sorrel is distributed all over China, as well as in temperate Asia, Europe, the Mediterranean, North America and other places. It prefers sunny, warm, and moist environments, and usually grows in grass, roadsides, river valleys, and shady places under forests. In summer, hot areas should be shaded semi-shaded, with strong drought resistance and not cold tolerance. Generally, the garden soil can grow, but the sandy loam soil rich in humus grows vigorously, and there is a short period of dormancy in summer. Sorrel has the effect of clearing heat and dampness, cooling blood and dissipating stasis, detoxifying and reducing swelling, and also has a good antibacterial effect, which has an inhibitory effect on many bacteria. It is also an excellent ground cover for landscaping, and the young stems and leaves can be served cold or made into soups. The sour taste is pure and thick, refreshing and appetizing. In addition, the stems and leaves of sorrel contain oxalic acid, which can be used to rub copper mirrors and other copper utensils to make them shiny and bright. 
Overall, sorrel is a very interesting plant with a variety of practical and ornamental values.
The time for which sorrel is grown varies depending on the variety and region. Generally speaking, sorrel can be planted in spring and autumn, that is, in February, April and July, September every year. The climatic conditions during these two periods are more suitable, and the seeds can germinate better and the plants can grow well after planting. If it is planted in the southern region, there is not much restriction on the time of planting because of the warm climate.
Spring planting can be chosen, as spring temperatures are higher in the south, which is conducive to seed germination. If the temperature can be maintained at around 20 degrees Celsius, it can be planted until the end of August. If the winter temperature is not very low, it can also be planted around September in the fall.
If it is planted in the northern region, it will be planted later because of the colder climate. In general, you can choose to plant in the spring in April and May, when the temperature has gradually increased, which is conducive to the germination of seeds and the growth of plants. If you choose to plant in autumn, you need to do it indoors and take care to keep warm.
Regardless of the season in which sorrel is planted, it is necessary to choose loose, fertile, well-drained soil and treat the seeds before planting to improve germination rates.