Xuelihong, whose scientific name is Xuelihong, is a plant of the genus Brassica of the Brassicaceae family.

Xuelihong, also known as Xuelihong, Xuicai, Chunbu Lao, Frost Bu Lao, is a cultivated variety of Brassica mustard in the Brassicaceae family. Annual herb, up to 150 cm in height, young stems and leaves with stinging hairs and spicy taste; stems erect, basal leaves oblanceolate or oblong, oblanceolate, not cracked or slightly defective, irregular Serrated or heavily serrated.

The upper and top stem leaves are small, oblong, entire, and shriveled. The racemes are terminal and extended after flowering; the flowers are yellow, the sepals are light yellow, oblong-oval, and spread upright; the petals are obovate, the siliques are linear, and the seeds are spherical and purple-brown. It blooms from March to May and bears fruit from May to June.

Because of its cold resistance, in northern China, some of its leaves turn red in autumn and winter, so it is named "Xuelihong". In southern China, reddish "Xuelihong" is rarely seen. It is red in color", so it is also misunderstood as "Xuelihong".

Introduction to D. edulis

D. edulis prefers a cool climate, and the suitable temperature for growth is 15 to 20°C. Higher than 25°C or lower than 15°C will cause slow growth, small size, and Under high-temperature conditions, fibrous material increases and varieties decrease. Under low-temperature conditions, D. angustifolia will not freeze to death in cold snow. D. angustifolia grows well and rapidly under sufficient sunlight. Low temperature and long sunshine are conducive to the formation of flower buds, but D. angustifolia will not freeze to death during the growth period. Adequate water is needed, and lack of water will lead to an increase in fiber material.

Psoralea is a common vegetable that is widely sown in both the north and the south. In the north, it is mostly cultivated during the dog days and can be used as a winter vegetable; in the south, it can survive the winter in the open field. It has strong cold tolerance and can be sown and grown except in winter. It does not have high soil requirements. Moist soil that retains water and fertilizer is preferred. It can be sown directly or seedlings can be transplanted. If seedlings are transplanted, the soil should be fully exposed to the sun after plowing the seedbed, and then apply farmyard manure and a small amount of compound fertilizer.

For the above content, please refer to Baidu Encyclopedia - Brassicum (Brassicaceae)