When did dandelions first appear in China?

It appeared in China during the Tang Dynasty and the Five Dynasties.

Tang Materia Medica is the earliest historical reference, Tang Materia Medica, also known as New Revision of Materia Medica, is one of the ancient Han medical works, compiled by Su Jing et al. (657 659 AD, Tang Xianqing 2 4 years).

This is the first time dandelion has been mentioned.

The medicinal value of the plant can at least prove that there was a dandelion plant before 659 AD.

To sum up, during the Tang Dynasty and the Five Dynasties, there were dandelions in China.

Dandelion is a perennial herbaceous plant of the Asteraceae family. The inflorescence is head-shaped, and the seeds have pompoms formed by white crown hairs, and after the flowers bloom, they float to a new place with the wind to give birth to new life. The dandelion plant contains a variety of healthy nutrients such as dandelion alcohol, dandelion, choline, organic acids, inulin, etc., which are diuretic, laxative, and jaundice.

choleretic and other effects. Dandelion contains protein, fat, and carbohydrates at the same time.

Trace elements and vitamins are rich in nutritional value, can be eaten raw, fried, and made into soups, and are plants that are used both for medicine and food. Dandelion flowers bloom at noon and do not bloom in the morning and evening. In the countryside, it is also called cuckooing.

Dandelion is also known as goldenrod and mother-in-law.

Hua Hualang and so on. Asteraceae perennial herbaceous plant. The inflorescence is head-shaped, and the seeds have pompoms formed by white crown hairs, and after the flowers bloom, they float to a new place with the wind to give birth to new life.

Hello landlord: Your questions are very in-depth, and I can only help you to do it at a shallow level.

The encyclopedia took a look at the entry for "dandelion", and in the catalogue 5 "Main values" under "Medicinal use" there is the following record:

Tang Materia Medica: Sweet, flat, non-toxic.

Indications: Clearing heat and detoxifying, diuretic and dispersing knots. Treatment of acute mastitis, lymphadenitis, scrofula, boils and sores, acute conjunctivitis, cold and fever, acute tonsillitis, acute bronchitis, gastritis, hepatitis, cholecystitis, urinary tract infection.

Tang Materia Medica: Housewife cradle carbuncle.

The Tang Materia Medica, also known as the New Revision of Materia Medica, is one of the ancient Han medical works, compiled by Su Jing et al. (657 659 AD, 2 4 years of Tang Xianqing).

This is the first time that the medicinal value of dandelion has been mentioned, and it can be proved that there was a dandelion plant before 659 AD.

To sum up, during the Tang Dynasty and the Five Dynasties, there were dandelions in China.

Dandelion perennial herb. White latex, height 10-25cm. The roots are deep and long, single or branched.

The leaves are rooted, arranged in a rosette-shaped; Leaves short-round-lanceolate, inverted-lanceolate or obovate, 6 15 cm long, 2 wide, apex pointed or obtuse, base narrow, descending petioles, entirety or sparsely toothed, green or margins with lilac spots, covered with white filamentous hairs.

The upper part of the flower stem is densely covered with white filamentous hairs; The inflorescence is single, apical, diameter, all tongue-like, bisexual; total bracts bell-shaped, bracts multilayered; Corolla yellow, long, 2 wide, apex truncated, 5 lobed. achenes inverted-lanceolate, 4.5 mm long, about wide, longitudinally ridged, with many spiny protrusions, beaked at the apex, with white crown hairs.

Perennial herbaceous plant.

Dandelion (Latin scientific name: taraxacum mongolicum hand.).-mazz.

Asteraceae, dandelion is a perennial herbaceous plant. Roots conical, surface brown, wrinkled, leaf margins sometimes wavy toothed or pinnate deeply lobed, base tapering into petioles, petioles and main veins often reddish-purple, the upper part of the flower leaves purplish-red, densely covered with spider-like white pubescence; The inflorescence is capitate, the bracts are bell-shaped, the achenes are dark brown, the long crown hairs are white, and the flowering and fruiting period is 4 October.

Dandelion is also known as goldenrod and mother-in-law.

The spring flowering period is from April to May, and the autumn flowering period is from August to September; The flowering period of dandelions varies by about seven days depending on the microclimate conditions of the place where they are grown.

Dandelion: Asteraceae, also known as goldenrod, mother-in-law, Huahualang, etc., dandelion is a perennial herbaceous plant. Roots conical, surface brown, wrinkled, leaf margins sometimes wavy toothed or pinnate biki deep frontal fissures, base tapering into petioles, petioles and main veins often reddish-purple, the upper part of the flower leaves purplish-red, densely covered with spider silk white pubescence; The inflorescence is capitate, the bracts are bell-shaped, the achenes are dark brown, the long crown hairs are white, and the seeds have pompoms formed by white crown hairs, and the flowers float to a new place with the wind to give birth to new life.

It is widely found in the middle and low altitude areas of the hand-ruffled mountain slopes, grasslands, roadsides, fields, and river beaches.

Dandelions generally bloom from April to September. In order for it to bloom early, it needs to be provided with sufficient light, which is conducive to the differentiation of flower buds. In addition, fertilizers, especially phosphorus and potassium fertilizers, should be supplemented, which have a good effect on promoting flowers.

In addition, it is also necessary to pay attention to water control and extend the watering interval, so that the plant can shift nutrients from growth to reproduction, and naturally flower.

1. Roots: The roots of dandelions usually grow in a curved shape, with a conical shape and a length of about 4-10 cm. The surface of the root is tan, somewhat shrunken, and the top is brown or yellowish-white hairy.

2. Leaves: The leaves of dandelions are lanceolate, between 4-20 cm in length and 1-5 cm wide. The apex of the leaf is either blunt or pointed, with wavy teeth on the margins, some pinnate and deeply lobed, and the lobes at the top are large, mostly triangular, with 3-5 lobes on each side.

Its petioles and veins are reddish-purple with spider-like white pubescence.

3. Flowers: The flowers of dandelions grow at the top of the flower leaves. The flowers are as long as the leaves, purplish-red on the top, and have dense spider silky pubescence.

The flowers are capitate, about 3-4 cm in diameter. The total bracts are bell-shaped, pale green in color, and have 2-3 layers. The outermost layer is broadly membranous at the edges, pale green at the bottom, purplish-red at the top, and a few convex points.

The inner layer is larger, and the top is also purplish-red. Its tongue-like flowers are yellow with purplish-red stripes on the back.

4. Fruit: The fruit of dandelion is achene, mostly lanceolate, dark brown in color, only 4-5 mm in length and about 1 mm in width. It has small spines on it, a slender tip and white crown hairs that float away when the wind blows.

1. Introduction to flowering period.

Dandelions generally bloom between April and September, depending on the climate and variety of the region. If the climate is warm in the south, the flowering time will be earlier, while in the north the climate is cold, the flowering will be delayed. It is highly adaptable and can grow normally in both the north and the south.

Generally, the flowering period lasts for one or two months.

Second, the management of the flowering period of the Kaisha Hall.

1.Sufficient light: It loves light, and it should be allowed to bask in the sun when it blooms, so that it can bloom and grow better when it has enough light.

The flowering period coincides with the height of summer. During this period, be careful not to expose to the sun, properly block strong light, and avoid injury. 2.

Proper watering: It is a drought-tolerant plant but consumes a little more water during the flowering period. It is advisable to increase the amount of water appropriately to moisten the soil.

In addition, when the environment is dry, it is necessary to sprinkle water frequently to moisturize, which is conducive to growth. 3.Adequate nutrition:

Nutrition is the key to its vigorous growth. At this time, more phosphorus and potassium fertilizers should be applied, about once every 20 days. Phosphorus and potassium fertilizers have a promoting and protective effect on flowers, which is conducive to flowering and growth.

Three, ** Daquan.