The seven elements of the culture method of Catharanthus roseus must be looked at.

First: soil. Catharanthus roseus is suitable for planting in fertile and well-drained soil. The soil is acidic and should not be alkaline. Caking, poor permeability of the soil will make Catharanthus roseus poor growth, leaves withered and yellow, or even do not bloom.

Second: sunshine. Catharanthus roseus likes the sun, so it must be placed in a sunny place so that the leaves will be green and shiny and the flowers will be more. If you leave it in a dark place for a long time, it will make the leaves withered and yellow.

Third: temperature. Catharanthus roseus likes a warm environment. From March to July, the most suitable growth temperature is 18-24 ℃, and from September to March of the following year, the most suitable growth temperature is 13-18 ℃. The temperature below 10 ℃ will stop growing and even get frostbite.

Fourth: watering. Catharanthus roseus likes dry environment and avoids dampness. Therefore, do not water Changchun flowers too much, otherwise the pot soil will be wet and affect its growth and development.

If the temperature is high in summer and the water evaporates quickly, the plants placed indoors can slightly increase the amount of water; if the temperature is low in winter, the plants placed indoors should properly control the amount of watering and keep the potted soil dry, otherwise Catharanthus roseus will be easily frostbitten or even die. If it is open-air cultivation, there are often heavy showers in summer, we should pay attention to the timely drainage of Catharanthus roseus to prevent waterlogging.

Fifth: fertilization. Fertilizer can be applied every ten days, using compound fertilizer and liquid fertilizer alternately, pay attention to not the amount of fertilizer, should not be too much. Before cultivating Catharanthus roseus, a layer of base fertilizer should be spread on the bottom of the basin soil, which can ensure the nutrient content of the soil.

Sixth: diseases and insect pests. Because Catharanthus roseus itself is slightly toxic, it has a strong ability to resist pests. However, in the seedling stage, Botrytis cinerea is easy to appear, so we should pay attention to the disease prevention work in the seedling stage.

Seventh: pruning. Catharanthus roseus belongs to herbs and is more suitable for planting in flowerpots. However, Catharanthus roseus is growing fast and needs reasonable pruning so as not to affect the beauty of the interior. After the seed pot survives, it is necessary to pick the heart several times, which can promote the germination and branching and blossom more.

Seven main points of cultivation methods of Catharanthus roseus

Catharanthus roseus (scientific name: Catharanthus roseus), also known as Richun, Nissan, Rishin, 30000 Flowers, 04:00 Spring, clock Flower, Yanlai Hong, etc., are perennial herbs. Stem erect, much branched. Leaves opposite, long elliptic, petiole short, entire, smooth on both sides, main vein white. Cymes terminal. Flowers are red, purple, pink, white, yellow and other colors, Corolla butterfly-shaped, 5-lobed, there are dark holes in the center of the flower. At the top of the twigs of Catharanthus roseus, two flowers appear in the axils of each leaf, so it has many flowers, long flowering period, luxuriant and vibrant flowers. It blossoms non-stop from spring to autumn, so it has the reputation of "every day and spring". At present, many varieties have been bred in Taiwan, and there has been a growing trend in flower breeding in recent years. Catharanthus roseus is very suitable for planting in potted plants for home furnishing. here are a few key points of Catharanthus roseus culture:

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

2. Sunshine: Catharanthus roseus is a light-loving plant. During the growing period, there must be sufficient sunshine, green leaves and bright colors. If you grow in the shade for a long time, the leaves will turn yellow and fall.

3. Temperature: like 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 ℃.

4. Watering: 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.

5. Fertilization: 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.

6. 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.

7. Pruning: Catharanthus roseus is a herbaceous plant, which is more suitable for potted plants, but it should be careful not to let the plant grow too high, affecting indoor decoration and ornamental, so after surviving in the pot, it is necessary to pick the heart several times to promote multiple branches and blossoms, and the residual flowers must be cut after flowering.

Summary

Catharanthus roseus has a long flowering period, beautiful colors and graceful gesture. In recent years, the varieties of flowers cultivated are also getting bigger and bigger, and it is very suitable to be a bonsai ornamental plant. It has an unexpected effect in home layout. I hope it will be helpful to all of you.

Cultivation methods of Catharanthus roseus soil requirements of Catharanthus roseus

Catharanthus roseus is native to tropical Asia. It likes warmth, does not tolerate severe cold, and avoids dampness and waterlogging. Catharanthus roseus can be cultivated in general soil, but saline-alkali soil is not suitable. Sandy soil with good drainage and ventilation is better.

When planting Catharanthus roseus in pots, use loose soil rich in humus, and put on the pot when the seedlings grow 6-7 true leaves. When the seedling height is 7-8 cm, the heart can be picked once, and then twice, in order to promote multiple branches and more flowering. At ordinary times, Catharanthus roseus should not be watered too much, too wet will affect its growth and development. If some nitrogen fertilizer is applied to Changchun peanut for a long time, some phosphate fertilizer can be applied in the bud stage. The residual flowers must be cut off after blooming.

Water requirement of Catharanthus roseus

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.

Propagation methods of Catharanthus roseus

Catharanthus roseus is often propagated by sowing.

When sowing in early spring, the seedlings grow slowly in the early stage, and when the seedlings grow to 3-4 true leaves, they begin to divide and transplant, and they can be planted when they have 6-8 pairs of true leaves.

In May, the flower beds are watered every 3-5 days, and the flowers will be leafy if they are properly topdressing with phosphorus and potassium fertilizer. Cutting propagation: the twigs on the overwintering old plants can be taken in spring, cut 8cm long, with some leaves, and planted in the wet sandy loam, rooting temperature is 20 ℃-25 ℃, pay attention to shade and maintain humidity.

When the seedling is 10 centimeters high, hit the top to promote the hair, then put on the three-inch basin and gradually turn it to the seven-inch basin. The ripe fruit of Chunhua can crack and scatter the seed by itself. When the fruit turns yellow, it should be picked in time, otherwise it is difficult to get the seed. It can plant three crops a year, with an annual output of more than 1300 kilograms of hay per mu.

Topdressing should be applied every 30 days or so in the growing season, watering should be paid attention to at any time, but no stagnant water should be allowed and drainage should be paid attention to in the rainy season.

In order to promote branching, 2-3 coring should be carried out from planting to the middle of August, so that flowers and leaves can flourish.

The overwintering temperature is 10-12 ℃. Catharanthus roseus sows when the temperature rises to about 10C, transplants once when the seedlings grow 4-5 pairs of true leaves, and can also take the twigs from the overwintering old plants for cutting in spring.

Maintenance skills of Catharanthus roseus

Usually manage Catharanthus roseus, but also pay attention to ensure that the plant is given adequate light, long-term shade in the shade, lack of light, will make the leaves yellow.

If the soil is alkali-hardened, poor ventilation and poor water seepage, it will also cause poor plant growth, yellow leaves and no flowering.

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

If the family room temperature is kept at about 15-20 degrees, it can blossom continuously. Catharanthus roseus can be moved to outdoor management after the beginning of spring. Catharanthus roseus is generally cultivated to change the pot every two years.

The ripening period of Catharanthus roseus fruit is from September to October, and the fruit is ripening successively and must be collected in time. Catharanthus roseus is multipurpose in propagation and sowing.

Sowing is usually carried out in early April and can be sown in the open field or in pots. In addition, the softwood cuttings of the old plants can also be taken in spring, and Catharanthus roseus can be topped after survival to promote more branches.