Cultivation methods and matters needing attention of Catharanthus roseus how to raise Catharanthus roseus

Catharanthus roseus, like its name, can blossom all the year round, and its flowering period is relatively long, so it is suitable to watch at home, especially in the cold winter, when you can see a flowering plant, there will be a trace of warmth in your heart. then some people will ask that this kind of perennial flowering flowers must be more difficult to raise, but in fact, let's take a look.

How to raise Catharanthus roseus

Catharanthus roseus is fond of high temperature, high humidity, tolerance to semi-shade and not resistant to severe cold. The most suitable temperature is 20 ℃-33 ℃. It can be cultivated in general soil, but it is not suitable for saline-alkali soil. It is better to use sandy or humus-rich soil with good drainage and ventilation.

Culture methods and matters needing attention of Catharanthus roseus

I. Culture methods

1. Soil requirements

Suitable for fertile and well-drained soil, resistant to barren soil, but do not be alkaline. Clayey soil with hardening and poor ventilation results in poor growth of plants, yellowing leaves and no flowering.

2. Lighting requirements

Catharanthus roseus is a light-loving plant, there must be sufficient sunshine during the growing period, the leaves are green and shiny, and the flowers are bright. If you grow in the shade for a long time, the leaves will turn yellow and fall.

3. Watering frequency

Catharanthus roseus avoid dampness and fear of waterlogging, basin soil watering should not be too much, too wet affects growth and development. In particular, indoor winter plants should be strictly controlled watering, it is better to dry, otherwise it is easy to freeze. Open field cultivation, midsummer showers, pay attention to timely drainage, so as not to cause the whole area to die by waterlogging.

4. Fertilization management

When applying fertilizer, compound fertilizer and liquid fertilizer can be applied alternately every ten days. The bottom of the Catharanthus roseus pot soil should also be covered with a layer of base fertilizer as far as possible to ensure the nutrient content of the pot soil.

5. Prevention of diseases and insect pests

Catharanthus roseus plants are poisonous, so they are more resistant to diseases and insect pests. The main diseases in seedling stage are: seedling quenching disease, Botrytis cinerea and so on. In addition, it is necessary to prevent the occurrence of fertilizer damage and drug damage in seedling stage. If it happens, it should be watered with clean water immediately to strengthen ventilation and reduce the harm.

6. Suitable temperature

Prefer a warm, slightly dry and sunny environment. The suitable temperature for growth is 18: 24 ℃ from March to July, 13: 18 ℃ from September to March of the following year, and the winter temperature is not lower than 10 ℃.

1. Being in the shade for a long time and lack of light will make the leaves yellow.

2. If the soil is alkali-hardened, poor ventilation and poor water seepage, it will also make the plant grow badly, and the leaves will turn yellow and do not bloom.

3. It is necessary to move indoors in winter, keep the room temperature above 5 degrees, and control watering. The basin soil should be dry.

Pruning methods of Catharanthus roseus

Catharanthus roseus is a herbaceous plant, suitable for potted plants, but it should be noted that its plant should not be allowed to grow too high, so as not to affect indoor decoration and ornament, so after surviving in the pot, it needs to be picked several times to promote Catharanthus roseus multiple branches and blossoms, and the residual flowers need to be cut off after flowering. In addition, it is also necessary to prune insect branches and strengthen fertilizer and water management. When pruning in winter and summer, insect branches and dry and dead branches should be re-pruned. At the same time, it is also necessary to strengthen fertilizer and water management, promote Catharanthus roseus to shoot, renew the crown and restore the tree momentum.

Heart-picking work: in addition to normal fertilizer and water management, the focus is on heart-picking and the prevention and control of stem and leaf rot in the rainy season. The purpose of heart picking is to promote the branching of Catharanthus roseus and control the florescence at the same time. Generally speaking, when there are 4 or 6 true leaves, you begin to pick the heart, and when the new shoots grow 4 or 6 leaves, you should pick the heart for the second time, and it is best not to pick the heart more than 3 times. The last pick had a direct impact on the flowering period. Generally speaking, the last heart pick in autumn needs to be 25 days before the early flowering, and the last heart pick in summer is 3-5 days earlier than in autumn. Catharanthus roseus can not be plucked, but in order to get a better plant type, it is best to pick the heart once or twice. For the first time, there were 3-4 pairs of true leaves, and the second time, 1-2 pairs of true leaves were left in the new branches. In the process of cultivation, regulators can usually be used, but paclobutrazol can not be used.

The efficacy and function of Catharanthus roseus

1. Efficacy and function of Catharanthus roseus according to modern medical research, more than 70 kinds of alkaloids have been isolated from Catharanthus roseus, such as vincristine, vincristine, rocodine and so on. Most of the alkaloids isolated from Catharanthus roseus have anti-tumor effects, among which vincristine and vincristine are the most valuable and have been used in clinic. Vinblastine mainly acts on Hodgkin's disease and choriocarcinoma, and has obvious inhibitory effect on transplantable acute lymphocytic leukemia P-1584 in mice, especially the sulfate biological effect of vincristine. Vincristine has obvious inhibitory effect on Ehrlich ascites carcinoma in mice. Intravenous injection of total alkaloids has antihypertensive effect on cats and rabbits. Total alkaloids also dilate coronary vessels.

2. Catharanthus roseus also has hypoglycemic effect, foreign folk use Catharanthus roseus leaves and whole plants to treat urine sickness. It is introduced abroad that Catharanthus roseus can be used as a hemostatic agent for uterine bleeding and its root can be used for abortion. All of its alkaloids have different degrees of antibacterial activity. According to clinical reports, 22 cases of Hodgkin's disease, 11 cases of lymphosarcoma, 1 case of malignant reticular cell hyperplasia, 1 case of mycosis fungoides, 1 case of leukemia, 1 case of chloroma, 1 case of mediastinal tumor and 6 cases of reticular cell sarcoma were treated with vincristine sulfate. The vast majority of cases were confirmed by pathological biopsy or hematological examination. The results were completely disappeared in 4 cases, markedly effective in 15 cases, effective in 12 cases, ineffective in 6 cases, deterioration in 3 cases and unknown in 4 cases.

This product is effective in the treatment of malignant lymphoma, the curative effect is fast, there is no need for repeated injection in the near future, and there are few side effects. 5 cases of acute lymphocytic leukemia, 1 case of subacute lymphocytic leukemia, 2 cases of acute myelocytic leukemia, 1 case of subacute granulocytic leukemia and 10 cases of lymphosarcoma were treated with vincristine sulfate. There were 2 cases of lymphocytic leukemia and 1 case of lymphosarcoma, 3 cases of lymphocytic leukemia and 1 case of lymphosarcoma. With the further development of medicine, if the anti-cancer function of Catharanthus roseus can be brought into greater play, then human beings can also be Changchun.

It seems that it is not so difficult to raise a pot of Catharanthus roseus, but we still have to pay more attention to it if we want it to be more beautiful. today, the editor not only knows the ornamental value of Catharanthus roseus, but also deeply understands its medicinal value. it's just a plant like it that has toxins, and we still have to use it in accordance with the doctor's advice.