When is the best time to plant Catharanthus roseus (Madagascar periwinkle)? Analysis of planting time and points to note
Catharanthus roseus is a flower that combines ornamental and medicinal value, and its beautiful blooms make it much loved in daily life. So when is the best time to plant Catharanthus roseus? Below, the editor will give you a detailed analysis of the best planting time and points to note for Catharanthus roseus.
I. Suitable planting seasons
In fact, the most suitable seasons for planting Catharanthus roseus are spring and autumn. In spring, the planting time is from March to May, when the temperature generally stays around 20 to 25 degrees. In autumn, it is September to October, and it cannot be done earlier, because before September the temperature is too high, which is very unfavorable for the flower bud germination of Catharanthus roseus.
II. Spring and autumn
In fact, Catharanthus roseus is always planted in spring and autumn, because the temperature and environment of these two seasons are more favorable for the root growth and sprouting of Catharanthus roseus plants. The temperature in these two seasons is not extreme, so the plant will not be scorched by excessively high temperatures.
III. Spring planting time
When planting in spring, you can choose March to May, because the temperature at this time is between 20 and 25 degrees. But if you want the Catharanthus roseus you grow to bloom earlier, you can sow earlier in a greenhouse.
IV. Autumn planting time
The second season is autumn. The specific time for autumn planting is between September and October. When planting in autumn, it is best not to plant too early, because before September the temperature is very high, which is very unfavorable for the sprouting of Catharanthus roseus.
V. Points to note when planting
After we sow Catharanthus roseus, tender sprouts will emerge in about 2 to 3 weeks. At this time, it must not be exposed to direct sunlight. When it grows three true leaves, it can be transplanted into pots. Later, attention should be paid to watering, fertilizing and supplementing nutrients.
The best planting time for Catharanthus roseus is spring and autumn, but in order to improve the survival rate, everyone needs to pay attention to planting techniques when planting. The above is a detailed analysis of the best planting time and points to note for Catharanthus roseus. We hope it is helpful to all growers.
When to sow Catharanthus roseus (which month) - the flowering period of Catharanthus roseus
Flowers, plants and the like all have times suitable for their growth and sprouting. Under such time conditions, the natural environment can provide the temperature, light and water the plants need. So when growing them at home, we also need to consider some of the growth patterns plants have formed in nature, so that our cultivation process can go more smoothly.
When to sow Catharanthus roseus
Sow around March to May in spring, with the best temperature between 20 and 25 degrees Celsius. Generally, they sprout 14 to 21 days after sowing. In early spring you can begin raising seedlings, and in the warm spring you can cultivate them.
The flowering period of Catharanthus roseus
The flowering period of Catharanthus roseus is very long. Basically, when Catharanthus roseus blooms, the flowering period starts from April to May, and generally it can last quite a long time, blooming continuously from spring to autumn, and it can even keep blooming all year round, which is why it is called "daily spring."
However, a single flower of Catharanthus roseus does not last very long; generally one flower can bloom for 3 to 5 days.
Fertilization methods for Catharanthus roseus
1. What fertilizer should be applied to Catharanthus roseus
Catharanthus roseus is not tolerant of waterlogging and is most afraid of being soaked in the flower pot. Fertilization should also use some water-soluble fertilizer, applied once every seven to ten days, and in deep winter the amount of fertilizer should be relatively reduced. It mainly depends on what kind of soil medium it is. If it is ordinary soil, a compound fertilizer can be mixed into the soil as a base fertilizer when potting. When the plant shows that it needs topdressing, apply water-soluble fertilizer.
2. How to fertilize Catharanthus roseus
During the seedling stage of Catharanthus roseus, it will undergo one operation of removing the growing tips, after which normal fertilization should begin, which is the once-every-seven-to-ten-days watering with water-soluble fertilizer mentioned above. When the flowering period begins, the fertilizer should be mainly organic fertilizer, supplemented by compound fertilizer, applied once a month. This can both ensure the vividness of the flowers during the flowering period and extend the flowering period of Catharanthus roseus, achieving the greatest ornamental value.
Pruning of Catharanthus roseus
1. Pruning methods for Catharanthus roseus
Catharanthus roseus is an herbaceous plant and is suitable for pot cultivation. However, note that its plant must not be allowed to grow too tall, so as not to affect indoor decoration and viewing. Therefore, after it survives potting, it needs several pinchings to promote more branching and more flowering in Catharanthus roseus. After flowering, the spent flowers need to be cut off.
In addition, pest-damaged branches also need to be pruned, and fertilizer and water management should be strengthened. When pruning in winter and summer, pest-damaged branches and dry, withered branches should be heavily pruned. At the same time, fertilizer and water management should also be strengthened to promote Catharanthus roseus to send out new shoots, renew the crown, and restore tree vigor.
2. The pinching work for Catharanthus roseus
In addition to normal fertilizer and water management, the key is pinching and preventing stem and leaf rot disease during the rainy season. The purpose of pinching is to promote branching in Catharanthus roseus and at the same time control the flowering period. Generally, pinching begins when there are 4 to 6 true leaves, and the second pinching is done when the new shoots grow 4 to 6 leaves. It is best not to pinch more than 3 times.
The last pinching directly affects the flowering period. Generally speaking, the last pinching in autumn needs to be 25 days before the initial flowering period, and the last pinching in summer should be 3 to 5 days earlier than in autumn.
Catharanthus roseus does not have to be pinched, but in order to obtain a better plant shape, it is best to pinch once or twice. The first time is at 3 to 4 pairs of true leaves; the second time, leave 1 to 2 pairs of true leaves on the new branches. During cultivation, regulators can usually be used, but paclobutrazol must not be applied.
The reason Catharanthus roseus is called "everlasting spring flower" should include the fact that it has a long flowering period. Catharanthus roseus begins to bloom at the end of spring, and then it can remain in a blooming state all year round, just as if spring were always present. However, if you want to maintain a long flowering period, the necessary care procedures and methods are indispensable.
Efficacy, effects and contraindications of Catharanthus roseus - medicinal value of Catharanthus roseus
Catharanthus roseus is what people know as "four-season plum," a flowering plant with very high ornamental value, and it is also very suitable for home cultivation. However, for a flower to be grown by everyone at home, it must absolutely be able to satisfy some need of people, such as having very beautiful flowers for viewing or having some benefit to the human body. Catharanthus roseus combines both.
Efficacy, effects and contraindications of Catharanthus roseus
1. Efficacy and effects of Catharanthus roseus
Catharanthus roseus has a very good effect on cooling the blood and lowering blood pressure in the human body, and also has a very good effect of calming and soothing the nerves. It has a very good therapeutic effect on treating high blood pressure and fire burns. If one has malignant lymphoma, or choriocarcinoma and other relatively rare cancers, the use of Catharanthus roseus can be considered.
2. Contraindications
The main toxicity of vinblastine is suppression of bone marrow function; vincristine has more prominent toxicity to the nervous system and gastrointestinal tract, such as paresthesia, disappearance of the knee reflex, muscle weakness, neuralgia, hair loss, abdominal colic, intestinal obstruction, etc., while its reduction of white blood cells and platelets is much milder than that of vinblastine.
Medicinal value of Catharanthus roseus
1. Clearing heat and detoxifying
Catharanthus roseus clears heat and detoxifies. Fresh leaves pounded and applied externally have a relatively good therapeutic effect on sores, swellings and toxic lesions, and burns and scalds.
2. Calming and soothing the nerves
Guangzhou Army "Handbook of Commonly Used Chinese Herbal Medicines": "Calms and soothes the nerves, pacifies the liver and lowers blood pressure. Treats high blood pressure.
3. Lowering blood pressure
Intravenous injection of total alkaloids has a blood pressure-lowering effect on anesthetized cats and rabbits, with a rapid drop in blood pressure, unlike the slow blood pressure reduction of Rauwolfia total alkaloid preparations, and the blood pressure reduction is accompanied by deepened and increased breathing. Cutting the vagus nerve or using atropine does not affect its blood pressure-lowering effect.
4. Anti-cancer
Catharanthus roseus contains more than 70 kinds of alkaloids and is a natural good medicine for preventing and treating cancer. Among them, vinblastine and vincristine have certain therapeutic effects on treating malignant tumors such as lung cancer, lymphosarcoma and acute leukemia in children.
How to grow Catharanthus roseus into a full pot
1. Soil
When planting Catharanthus roseus, soil containing salt and alkali must not be chosen, and at the same time the soil must have good drainage and air permeability.
2. Light
Catharanthus roseus relatively likes sunlight. Placing it in an environment with suitable and sufficient sunlight for care is very beneficial for flowering, and can also effectively prevent leggy growth.
3. Temperature
The most suitable temperature for the growth of Catharanthus roseus is between 20 degrees and 33 degrees. After the temperature drops to 15 degrees, Catharanthus roseus will stop growing. If the temperature is below 5 degrees, Catharanthus roseus will be damaged by freezing.
4. Fertilization
If base fertilizer was not properly applied when planting, then during the growth period apply water-soluble fertilizer once every 10 days. But in winter, the amount of fertilizer applied should be appropriately reduced.
5. Watering
Catharanthus roseus is very afraid of water accumulation and waterlogging, as this will cause its roots to rot. So when watering, be sure to pay attention: do not water if not dry, and when watering, water thoroughly.
Sowing methods and points to note for Catharanthus roseus
I. Sowing methods for Catharanthus roseus
1. Sowing time
Sow around March to May in spring, with the best temperature between 20 and 25 degrees Celsius. Generally, they sprout 14 to 21 days after sowing. In early spring you can begin raising seedlings, and in the warm spring you can cultivate them.
2. Sowing soil
Mix peat and perlite at a ratio of 3:1, or use leaf mold. Use fertile, loose, well-drained sandy soil or humus soil, or soil tolerant of poor fertility, but do not use saline-alkali soil or clayey soil with poor air permeability, as it will hinder plant growth, causing yellowing leaves and failure to bloom. Before cultivation, sterilize with 500-600 times diluted carbendazim solution, and place it facing south toward the sun.
II. Points to note
1. When sowing, cover with a thin layer of fine sandy soil. Do not let sunlight shine directly on the seeds. Use a fine watering can to give Catharanthus roseus enough water, and cover with film or a straw curtain to keep the soil moist, so as to adapt to the environment needed for its germination.
2. Catharanthus roseus sprouts 14 to 21 days after sowing. The newly emerged seedlings cannot be exposed to strong light for a long time, and at noon when the temperature is high they need 2-3 hours of shading. When the seedlings grow to 5 cm and grow three pairs of true leaves, they can be potted; when they grow 6-8 pairs of true leaves, they can be planted in the ground. If planted in a flower bed in May, water once every 3-5 days and fertilize appropriately, which is beneficial to the growth of Catharanthus roseus.
As mentioned above, Catharanthus roseus, as a Chinese medicinal material, has very good therapeutic effects. However, these therapeutic effects require processing Catharanthus roseus to take effect, rather than freshly picked raw material having an effect directly. Another point to note is that Catharanthus roseus is toxic, so avoid accidental ingestion and the resulting adverse symptoms.