The culture method of pearl orchid

The pearl orchid prefers a warm, humid, semi-overcast environment with strong adaptability and tolerance to drought and cold. Like loose and fertile soil rich in organic matter. It grows best in the environment of warmth, high humidity and strong scattered light. Instead of soil, it grows better in loose sandy loam. Generally suitable for growth in medium light conditions, but also resistant to weak light. The suitable temperature for growth was 15 ℃ and 25 ℃, and the overwintering temperature was 5 ℃.

Culture soil of Pearl Cymbidium

In pot cultivation, rotten leaf soil or peat soil, garden soil and river sand are often mixed with a small amount of base fertilizer as substrate. Change the basin every 2-3 years and re-prepare the culture soil. The fleshy root has well-developed water storage tissue and strong drought resistance, but it needs more water during the peak growth period from March to September, so it should be watered and sprayed frequently, and the amount of water should be reduced gradually after autumn to improve the cold resistance of the plant. During the peak growth period, dilute liquid fertilizer was applied twice a month. Nitrogen fertilizer is the main fertilizer, but Jinxin and Phnom Penh varieties should not apply too much nitrogen fertilizer, otherwise the line spot of leaves will not become obvious. Cymbidium is not easy to suffer from diseases and insect pests, but if the basin soil is stagnant and poorly ventilated, it will not only lead to rotting roots, but also may cause root rot, so attention should be paid to spray control.

The Propagation method of Pearl Cymbidium

Can be propagated by cuttings. Branches and vines are very easy to take root and can be cut off in spring and autumn, half of which are buried in sand or loose soil, keeping moist but without stagnant water, and will soon take root for planting (about half a month in spring and autumn, while it is not easy to take root in winter and summer. This measure can be used to make up for the fact that the pot plants are not uniform and plump but grow too long. ) Cymbidium can be propagated by ramet. Except that the winter temperature is too low to be suitable for ramet, it can be carried out in other seasons. When potted plants were planted for 3 years, the dense potted seedlings were removed from the old culture soil and divided into two to several clumps when the pots were changed in spring. Cymbidium can also be propagated by small plants on the walking stem. In the growing season, the small plants on the stems are cut, planted in the culture soil or in water, and then transplanted into the basin after the small plants take root. In addition, seeds can be used for sowing, but they are generally rarely used.

Culture management of pearl orchid

Watering in cultivation should be better dry than wet. When the weather is dry, you can spray water to the leaves and vines to make up for the lack of moisture and keep the beads green and full. Avoid shade, high temperature and humidity. Prefer semi-shade, sun exposure may burn beads, too weak light will not grow strong.

Pearl orchid is mainly harmed by snails, aphids, cotton scale, soot disease and stem rot. The pearl orchid can grow well if you pay attention to the following points in the cultivation:

1. The leaves are succulent and succulent, so they are resistant to drought.

2. The root system of the plant is very shallow and can be planted in shallow pot. Generally, tiles are used to cover the bottom hole, and a layer of cinder or coarse sand is laid to increase air permeability and filtration (especially when commonly used plastic pots are planted). The soil had better use rotten leaf soil (the fallen leaves of autumn and winter trees are mixed with a certain amount of crushed soil. Mix in a certain amount of sand (the ratio of soil to sand is about 1:3).

3. Sex is warm and humid, cold-tolerant (low temperature of 0 ℃ in Jianghuai region), high temperature, and the optimum temperature is about 20 ℃ ~ 28 ℃. Grow slowly at high temperature and low temperature, almost dormant in high temperature environment, should be less watered and fertilized, otherwise it is easy to rot, if it begins to rot, immediately cut off the rotten place and cuttage the healthy parts, otherwise it will rot away soon. This is also one of the keys to successful cultivation.

4. "thin fertilizer" should be applied frequently in spring and autumn, and spraying 1-3 ‰ nitrogen fertilizer and potassium dihydrogen phosphate on the leaf surface is beneficial to make it greener and fatter and improve its ornamental value.

5. There are few diseases and insect pests, and aphids are one of them in spring, which should be wiped off or sprayed with 1500 times omethoate in time, while mites in summer and autumn should be killed with 1000 times triclofenac. Pay attention to ventilation and increase leaf humidity, can reduce the infection of mites.

6. The roots are easy to rot in summer, and watering should not be too frequent. It should be irrigated with a small spray can.

Disease control of pearl orchid

Pearl hanging orchid like semi-shady environment, if the light is too strong or insufficient, the leaves will easily become light green or yellowish green, lack of vitality, lose their due ornamental value, or even die; such as direct sunlight, dry air, the most likely to cause hanging orchid scorched, so it should be placed in a cool and ventilated place, and pay attention to maintain environmental humidity. Methods to prevent blackening, withering and shrinking of the leaf tips of potted orchids:

1. The air is dry, the sun is too strong and the temperature is too high. This situation mainly occurs in summer and autumn, because Cymbidium likes to grow in humid and semi-overcast environment, once the air is too dry and the sun is unsheltered, and if the temperature is as high as 30 ℃ or above, it is easy to cause the leaf tip of the plant to wither. If this is the case, you can put the plant in a semi-shady environment, cut off the dead leaves, often spray water to the leaf surface and the environment, and the newly extracted leaves can return to the normal state.

2. Stagnant water in basin soil and rotting of nutrient fibrous roots. Because the potted soil is too sticky or too heavy, or watering too frequently, the vegetative fibrous roots of Cymbidium are rotten, so the ability of the root system to absorb water will be greatly reduced, which will lead to the blackening of the leaf tip and the inner curvature of the edge. If this is the case, you can remove the plant from the flowerpot, shake off part of the persistent soil, cut off the rotten root system, replace it with clean wet sand, keep the sand moist, do not spray too much water, and wait for the emergence of white and tender whisker roots. and then replace the fertile culture soil for planting.

3. Without changing the basin for a long time, the root system grows directly to the basin wall. in the environment of high temperature, high drought or cold weather, it is easy to cause root tip atrophy and necrosis, making it lose its due absorption function, resulting in leaf tip drying and atrophy. If this is the case, you can first pour the plant out of the flowerpot, cut off the dead leaves or the necrotic parts of the leaves, then pick out part of the old soil, delete some aging or necrotic roots, and plant them with fresh culture soil. put it in a cool, moist, semi-shady environment, pay attention to more water spraying, less watering, the newly drawn young leaves of the plant can return to normal.