Periwinkle Spring Flowers

Scientific name: Catharanthus roseus

Alias: Sun, Spring, Hawthorn Blossoms, Open Every Day

Family: Apocynaceae Vinca

Category: Evergreen erect shrubs

Morphological characteristics:

Stems erect, much branched. Leaves opposite, oblong, petiole short, entire, smooth on both sides without hair, the main vein white obvious. Inflorescences terminal. Flower http://>Rose red, Corolla tall butterfly, 5 cracked, dark holes in the center of the flower.

Origin distribution:

Native to eastern Africa. It is mainly cultivated in the area south of the Yangtze River, and cultivation in provinces (autonomous regions) such as Guangdong, Guangxi, and Yunnan is common.

Growth habits:

Warm, slightly dry and sunny. The optimum temperature for growth is 18 to 24°C from March to July, 13 to 18°C ​​from September to March, and the temperature in winter is no lower than 10°C.

Changchun flower pots should pay attention to the application of basal fertilizer, suitable for planting loose soil with rich humus. When there are 3 pairs of true leaves in the seedlings, the pots are transplanted. After the planting, pay attention to water and fertilizer management, watering should not be too much, too wet, the growth and development is not good. When the seedling grows to 6 cm to 7 cm, it must be picked up once. Afterwards, it must be plucking the heart twice to promote its multiple branches and blossom. During the vegetative growth period, more nitrogenous fertilizers should be applied, such as decomposed liquid residue fertilizer and urea, and phosphorus and potassium fertilizers should be applied before the buds during reproductive growth, and 0.5% potassium dihydrogen phosphate can also be sprayed on the leaves. It can make its leaves dark green, shiny, and can promote its frequent flowering, pure color, after the flowers should be cut off the residual flowers.

Periwinkle flowering usually occurs in spring. To blossom earlier, seedlings can be planted in greenhouses in early spring, and cuttings can also be propagated. Rooting is easy, but growth is less robust than real growth.

In addition, vinca contains a variety of alkaloids, some alkaloids are toxic, some have medicinal value, but not blindly abuse or when the tea, so as not to cause adverse consequences.

Landscape use:

It resembles plum blossoms and has a long flowering period. It is used for spring and summer flower bed arrangements. The northern part also houses potted greenhouse flowers for potted plants. Seasonal flowers are the most common herbaceous flowers in the Jiangnan Garden in China.

Drug use:

Periwinkle not only has a graceful posture but also has a long flowering period. It is also a good medicine for cancer prevention. According to modern scientific research, there are 55 kinds of alkaloids in Changchun flowers. Among them, the anti-cancer components are vinblastine, vincristine, epoxy vinblastine, isovinblastine, and hydrocarbyl vinblastine. Since vinblastine and vincristine have a certain effect on the treatment of such malignant tumors as choriocarcinoma, lymphosarcoma, and childhood acute leukemia, it is currently the most widely used anticancer plant drug source in the world. With cooling blood pressure, sedative effect. Can also be used for high blood pressure, fire burns, malignant lymphoma, choriocarcinoma, monocytic leukemia.

According to medical experts, vinorelbine, which is mainly sold on the domestic market, was imported from France and its product name was “Novowiben”. However, most of the raw material drug vinblastine of “Novi Ben” was acquired from Hainan. At present, there are four companies in Hainan engaged in projects related to the development of Changchun flowers, but most of them are just planting and crude mention of vinblastine. There is no patented technology in hand.

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