How to plant orchids

It is very important to master orchid planting skills, but it is more difficult to manage and maintain orchids, so there is a saying that orchid conservation needs to understand the environment, accumulate conservation experience, and be patient and meticulous. The most important thing is to master the growth and development law of orchids, when to sprout, when to grow leaves, when to bloom and when to dormant. Then, the orchids are maintained and managed from the aspects of temperature, humidity, watering, fertilization, ventilation, plant protection, loving leaves and flower protection.

1. Cherish leaves

Orchid leaves are soft but not weak, just but not stiff. Orchids are lovely, but good flowers are rare and helpless; The leaves of orchids are evergreen all the year round, always maintaining vitality, giving people constant enjoyment all the year round. The elegance of orchids is manifested in flowers and attached to leaves. Mao Ye is the premise of good flowers. Ye Jianmao's own products are rich in nutrition, so the flowers are more beautiful. If the leaves are broken, there are many flowers, but they are only signs of rapid decline of the foot.

The key to cherish leaves is to control shading, air humidity, proper water and fertilizer, and keep good ventilation. Make the leaves of orchids lush and healthy, green and bright. It is also necessary to strengthen pest control to prevent wind and rain attacks and mechanical damage. In addition, to keep the tip of the blade, the tip of the blue blade is like the tip of a sword, the tip of a pen and the tip of a brow, which can convey the meaning vividly. Losing the tip of the knife is abrupt and dull. The key to preserving the leaf tip is to ensure that orchids need enough water and nutrients, and the pot soil is loose and breathable, so that the root system is developed and complete, the plants grow vigorously, and there is no scorching tip phenomenon. Some people think that the symbol of orchid cultivation is that the toes can pass through the eye of the needle, which means that the toes are intact and the edges are intact.

The tips of different orchids have different shapes, some are gradually pointed, some are obtuse, some are concave, and some are upturned; In terms of leaf color, some orchid varieties are "golden tip" and "silver tip" (that is, yellow or white tip), which shows that they are precious and rare, which is another layer of interest in leaf appreciation.

Care should be taken to protect the orchid leaves during maintenance, and the operation should be light and fine, so as not to collide with the orchid leaves and keep its natural posture. The polluted leaves should be carefully cleaned, and water mist should not be accumulated in the center of the leaf bundle. Old and diseased leaves that are yellow should be cut off in time.

The local cutting of orchid leaves can be cut with a knife at an appropriate position, and the cutting angle should be less than 30. There are also double knives, but they can't be cut flat.

Protect flowers

After the flower buds are unearthed, if there are too many, it will consume too many nutrients from the mother and hinder the formation and vigorous growth of leaf buds. We should remove the extra fine flower buds as soon as possible and leave a flower bud Z for each orchid seedling. It is advisable to keep 3-5 buds in each pot. According to the variety of orchids, the size of pots and the number of seedlings, flower buds should be reserved appropriately. In order to protect and develop valuable varieties, we can break off all the flower buds and let them flourish. During the period from flower bud elongation to flowering, we should maintain moderate illumination to make the flowers bright, full, shiny and fragrant. If the light is too weak, the color of the flowers will be weak and lack luster.

Flowering time is too long, which consumes nutrients and hinders germination, leaf growth and flowering in the next year. Bloom in Chunlan lasts for about half a month, and the flower scape should be cut off in time after the failure. Whelan's flowers will be cut off after the last flower in the inflorescence opens for l weeks. When breaking the scape, one hand holds the leaf base and the other hand presses the scape to one side, which can be broken or cut off from the base. Flowers and plants can be put into bottles and played for many days. Orchids are generally not allowed to pollinate after flowering, especially those that are not very strong and valuable, otherwise it will affect the next year's flowering. If cross breeding is to be carried out, artificial pollination should be carried out in time. Female parents are carefully managed to make their seeds full and mature.

3. Temperature

Most parts of China are in temperate zone and subtropical zone, while orchids are generally produced in places with mild and humid climate, high annual average temperature and long frost-free period. There are few orchids planted in northeast and northwest China, which are mainly limited by temperature.

Orchids and Whelan are the northernmost plants in China. They are distributed online, with frost or short-term snowfall in winter and higher temperature in summer. However, because orchids mostly grow in forests or bamboo forests mixed with broad-leaved forests and coniferous forests, trees can not only block the hot sun in summer, but also resist the cold wind in winter; Even the land covered with snow has little effect on orchids, because snow actually protects orchids from wintering, and the ground temperature under snow is generally not lower than 0℃. Our introduction and domestication of Cymbidium hybridum and Cymbidium hybridum have moved 600- 1000 km from their place of origin to the north, and they have been planted on a large scale. It can be seen that the viability and adaptability of orchids are still relatively strong.

In most areas of Northeast, Northwest and North China, it is too cold in winter to cultivate orchids outdoors. It takes half a year from the middle and late June of 10 to the late April of the following year. Orchids need to be moved indoors or cultivated in greenhouses. In the lower reaches of the Yangtze River, orchids should also be cultivated indoors or heated in greenhouses in winter. In Fujian, Guangdong, Guangxi, Yunnan, Sichuan, Taiwan Province and other provinces. Cold orchids and cymbidium in winter-generally do not need to spend the winter indoors. Some areas in Jiangxi, Hunan and Sichuan still need to take some measures to protect orchids in winter.

The temperature requirements of orchids: The temperature of orchid seeds germination is: 2 1℃-25℃ during the day, and 15℃- 18℃ at night. The temperature required for the growth of orchids is 20℃-22℃ during the day and 13℃-0℃ at night. The dormancy period of orchids in winter can reduce the temperature. For example, the lowest temperature of Chunlan and Huilan in winter night is 4℃-6℃, which can also be reduced to 0℃, and the leaves of plants can be reduced to -2℃-3℃ under dry conditions. Orchids are developed from flower buds, and the differentiation of flower buds is closely related to temperature and light. The predecessors have done a lot of research on flower bud differentiation of orchids, and the conclusion is that the low temperature of 12℃- 13℃ is enough to differentiate flower buds, which has little to do with the length of sunshine. However, the stronger the light intensity of orchids, the more obvious the effect of low temperature on flower bud formation. Therefore, it is better to cultivate orchids outdoors from late spring to autumn than indoors.

There are three main purposes to adjust the temperature, namely: preventing cold in winter, preventing heatstroke in summer and changing flowering period. When the temperature is lower than 0℃ in winter, the leaves and buds of orchids are vulnerable to freezing injury, and the leaves appear waterlogged black spots and the buds wither. If the temperature drops suddenly and sharply or the frost is extremely serious, the harm will be even greater. But too high a temperature in winter is not good, because orchids are dormant in winter, and too high a temperature will interfere with dormancy. In summer, if the temperature is too high and orchids suffer from summer heat, the leaves will be yellow, rough and dull, and they are easy to get sick, and often the base of the leaves begins to rot.

The flowering period of orchids is obviously affected by temperature. Under normal circumstances, appropriate temperature increase can lead to early flowering. For example, the flowering period of orchids in plain and urban cultivation conditions is often 15-30 days earlier than that in original wild conditions. Using this biological characteristic, the temperature can be properly adjusted to advance the flowering period by half a month to one month. In particular, varieties that bloom in spring generally form flower buds in July-September of last year. When they pass the hibernation stage and raise the temperature properly, they can blossom ahead of time and catch up with the Spring Festival. However, it must be pointed out that the temperature increase must be gradual. Experiments show that rapid temperature rise will have an inhibitory effect and delay flowering.

Methods of regulating temperature: Temperature has a great influence on the growth and development of orchids. If the temperature is too high, the respiration will be accelerated and the consumption of nutrients will increase. If it is too low, the enzyme activity will decrease, the synthesis will be less, and the growth and development will be slow. It is important that the daily temperature difference and the seasonal temperature difference must be formed in order to germinate and blossom. As for the temperature regulation of domestication and cultivation, we adopt the principle similar to that of Cymbidium. In summer, the double-layer sunshade net is used to shade the orchid garden, and the cooling effect is obvious. When the temperature is as high as 35℃, the temperature in Orchid Garden is only 3 1℃-32℃. Plastic greenhouses are used to keep warm in winter. When the temperature is as low as 0℃, it can still be kept at 6℃-8℃ in plastic greenhouse, and the temperature difference in winter is smaller than that in open field, which is beneficial to nutrient storage and will not cause freezing injury.

In addition to building tulan shed and outdoor, trees, shrubs, vines and lawns can be planted around orchid garden to absorb part of solar radiation heat in summer and slow down the heat loss on the ground and in the air in winter. That is, taking lawn as an example, it is measured that the environmental temperature of lawn in winter is higher than that of mud, and the maximum temperature difference during the day can reach 4.4℃, which is helpful to avoid freezing injury; In summer, the environmental temperature of grassland is much lower than that of cement floor, which is beneficial to heatstroke prevention and cooling.

In summer, clear water should be sprayed on the air, ground, flower stand and orchid leaves. Because water absorbs a part of heat during evaporation, it can play the role of cooling and heatstroke prevention; Similarly, expanding the nearby water surface, such as pools, reservoirs, ditches, water tanks, etc., also has this effect. In a greenhouse, curtains need to be hung on the glass to keep out the light and heat. When it is hot, pay more attention to ventilation, strengthen air convection and heat dissipation, and lift the cover on the shed; Open the doors and windows in the blue room to avoid heat stagnation.

Temperature adjustment, in addition to air temperature, should also pay attention to the soil temperature. The roots of orchids grow in soil, and the temperature of potted soil has a direct impact on their physiological functions. Generally speaking, there is a positive correlation between soil temperature and air temperature, and the soil temperature in the basin increases with the increase of air temperature, but the change process is relatively slow. First of all, it is necessary to prevent the hot sun from shining directly on the flowerpot, scalding the soil and flowerpot, and burning the orchid root stuck near the flowerpot wall; Also pay attention to the water temperature should be close to the soil temperature when watering, not too wide.

Another problem worth discussing is the relationship between artificial protection and the adaptability of orchids themselves. Like all plants, orchids have their adaptability to the external environment. Not born delicate. Therefore, orchid artists should take appropriate heatstroke prevention and cooling measures for orchids. If the coverage is too dense and the time is too long, it will inevitably weaken its resilience. Our Orchid Garden uses Hanlan and Jianlan, which were introduced and domesticated from 600- 1000 kilometers away from the south. In addition to protection, gradually strengthen the resistance to adversity and gradually adapt to the new environment.

4. Humidity

Humidity generally refers to relative humidity, usually expressed as a percentage. Orchids don't need roots and have no hair, so they absorb less water. On the contrary, blue leaves are overgrown. The transpiration of leaves is large, and only when the air is moist can the balance between water absorption and transpiration be maintained. In the growing season of orchids, the rainfall is abundant and the air is humid, and the relative humidity of the air is above 80%. In particular, Chinese cymbidium grows beside a stream, often filled with water mist, and the relative humidity is about 90%. Air drying is one of the important reasons why it is difficult to cultivate orchids in the north. Generally, it is not easy to cultivate orchids in urban families and balconies, and insufficient temperature is also the main factor. When the air humidity is low, the orchid leaves are rough and dull; If the air humidity is suitable, the leaves will be moist and green. Usually, the humidity required for orchid growth period should not be less than 70%, and the dormancy period in winter is about 50%; The air humidity at night is higher than during the day.

Humidity and ventilation are two contradictory factors. Too much ventilation will reduce humidity. There are too many dry winds in winter and spring in the north, which can't keep the humidity, which is not good for orchid growth. Therefore, ventilation should be reduced appropriately.

Ways to adjust and improve air humidity: plant a variety of trees, bamboo and grass around Orchid Garden. The roots of these plants can absorb a lot of water from the ground and then evaporate from the leaves on the surface. And it can keep the surface moisture, gradually transpiration, increase the content of water molecules in the air, thus improving the air humidity.

When the ground is dry. Sprinkling water on the ground, benches and walls can also reduce the temperature. You can also spray water or water on the space or leaves of the orchid planting area. But it is not advisable to sprinkle water or spray on the leaves at night. If you need to sprinkle water on the leaves at night, you must make sure that the leaves can return to dryness at night.

Sometimes it rains continuously in the south, especially in Huangmei season, and the humidity is too high. It is necessary to open doors and windows and shelter for ventilation. Orchids like warm and humid, with high humidity and good ventilation, they will thrive; However, in the case of low temperature and no ventilation, water vapor will condense into water droplets, which is harmful to new buds and easy to cause diseases, so low temperature and high humidity should be avoided.

We are planting orchid seedlings on a large scale. Bricks are laid around and covered with moss. Bricks and moss have strong water absorption and heat preservation ability, and this economical and simple natural humidification measure is very effective.

water

Pay attention to water quantity, water quality, water temperature, watering time and watering method.

In the classification of xerophytes, hygrophytes and mesophytes, orchids belong to mesophytes and do not need too much water, so the basin soil should not be too wet. This is determined by the structural characteristics of orchid roots. Pseudobulb of orchids is hypertrophy, with cuticle outside its surface, and epidermal cells are thickened to form stone cells, and the stems are covered with vascular bundles. Pseudobulb can store nutrients and water, which is not easy to evaporate. The roots of orchids are mostly fleshy, the outermost layer is root tissue, and the cells of root tissue are long, simple and polygonal. When the root tissue cells mature, the protoplasm disintegrates and the cell wall thickens. The function of root tissue is enough to protect cortex, absorb water and reduce and protect the loss of water in cortex. Therefore, orchids should not be watered too often, and the soil in the basin should not be too wet to avoid rotting roots. In addition, from the origin of orchids, orchids mostly grow on hillsides, on both sides of ridges and in rock crevices. These places are well drained and there is no danger of waterlogging. It adapts to this environment, so the rhizome structure of orchid is suitable for storage, water retention and nutrition.

The principle of orchid watering: it must be based on the following conditions:

(1) Species of orchids. Epiphytic orchids and aerial roots can be watered less. For example, Anemone macrophylla has aerial roots and can absorb water from the air, so there is no need to water it too much. In addition, leaves with thick cuticle should be watered less. For example, the cuticle of iron bone leaves is thick, and water evaporation is less, so watering should be strictly controlled.

(2) The growing season of orchids. The temperature rises gradually in spring, which is the season when new buds sprout, so water them in time. Water every day or every other day to keep the soil moist. If there is no water during this period, the flowers will be delayed and the buds will not flourish. In summer, the temperature is high and the water evaporation is large, which is the extension period of leaves, roots and root leaves. Water is poured once every morning, and if the soil is dry at night, some water can be added to soak the soil, so that the leaves are fully wetted, the temperature is lowered, and the nutrient consumption is reduced, which is beneficial to growth and development. In autumn, the temperature drops gradually and orchids grow slowly. Observe whether the soil in the basin is wet every day, water it when it is dry, and let it be wet. In winter, orchids go into dormancy. Potted soil should be slightly dry, with little or no watering, but attention should be paid to prevent potted soil from losing too much water, so that water can penetrate into the roots. Turn of winter and spring. After Cymbidium hybridum is pregnant, the flower buds begin to elongate, so the pot soil should also maintain a certain humidity. If the pot soil is too wet in winter, the water content of orchid plants will increase, which is easy to cause freezing injury.

(3) the growth of orchids. Orchids grow vigorously and have good roots, so they can be watered more; On the contrary, it should be reduced as appropriate, and the diseased plants should be controlled. When orchids germinate and grow, the water can be more; After germination, it can be gradually reduced. There is less water when the new buds mature, and more water when the flower buds appear. However, there should not be too much water in the flowering period to prolong the flowering period. After the flowers wither, stop watering for a few days, let the pot soil dry slightly, let the orchids sleep slightly, and then water.

(4) The situation of flowerpots and plants. That is, according to the texture and size of flower pots, there are many water pots and large pots, but few porcelain pots and glaze pots. There are many potted plants or many orchids planted on the ground.

(5) Dry and wet conditions of soil in the basin. The basis of watering, such as season, plants, weather, flowerpots and soil quality, can be comprehensively reflected from the degree of dryness and wetness of the basin soil, so the dryness and wetness of the basin soil is the direct and intuitive basis of watering. It can be judged by observation and touch. If the basin soil becomes hard, the color becomes lighter, and the moss on the basin surface is dry and wilting, it means that the soil is dry. Water it at once. If the basin soil is dark. There is moisture and mildew on moss, which is a sign that the soil is too wet. It is not advisable to add water. Generally, the suitable soil water content is 15%-20%.

(6) watering time. Generally speaking, spring and autumn should be carried out in the morning; Hot summer should be around sunrise and sunset; It can be capped at sunrise in early winter and early spring, and watered after the temperature is slightly warmer. In winter, you must water it at noon on a sunny day. But care should be taken to avoid wetting the leaves or soaking them in leaf sheaths.

Some folk experiences in watering orchids are very valuable. For example, for Chunlan and Cymbidium hybridum, there are experiences of "autumn is not dry, winter is not wet" and "spring is moist, summer is moist, and winter is not dry". It shows that orchids have different requirements for water in each growth and development stage, so they should be managed flexibly according to local conditions. Generally, after "beginning of spring", the climate gets warmer and stamens bloom. It is necessary to keep the soil moist and spray water every 2-5 days. After the "fright", there were no cymbidium and cymbidium, but they were cultivated in the open air. The water in the basin is easy to dry up in the wind, wind and sun, so it should be watered every day, but the amount of water should not be too much, once every 2-3 days or once a day. After the "long summer", the soil of all orchids (including Hanlan and Primula) after flowering should be slightly dry, because most orchids have a short dormancy period after flowering, which leads to slow growth and less evaporation on their leaves. Since June, the weather is getting hotter and hotter, and the growth rate of grass (that is, buds) is also accelerating. At this time, we should pay more attention to soil moisture, and often spray blue-leaved orchids with clear water to form a humid microclimate, which is conducive to the growth of grass. During the rainy season, watering should be controlled to reduce the occurrence of diseases. Leaf art and some petal-shaped seedlings are more prone to diseases, so pay more attention. The dog days are hot. In addition to strengthening shading, we should carefully keep the soil moist and spray the leaves and pots with clear water before and after sunrise every day. After the "White Dew", autumn gradually turns cold and is moistened by night dew. The new grass stopped growing, and the growth of Lanrui slowly broke ground. At this time, the irrigation amount can be reduced; But when the basin soil is found to be dry, it must be watered until it is wet. In late autumn, the new grass has changed from new green to light green, and has become thick and deep. Stamens can be seen everywhere. Prevent long-term rain and dampness, reduce "rotten clothes" (that is, rotten bracts), try to avoid rain and get more sunshine.

(7) Water quality and water temperature. It is best to water orchids with accumulated rainwater, which is the cleanest and most neutral; Rivers are second; The minerals in well water are mostly alkaline and poor; Tap water contains disinfectant, which is the most unfavorable to orchids. If tap water is used only as a last resort, it should be stored in the pool for more than 24 hours, preferably in the sun. After the disinfectant is precipitated or decomposed, water the orchids with clear water. In addition to this storage treatment, there is also an activation treatment, that is, aquatic organisms such as fish, algae, Chlorella and Haematococcus are stocked in the pool where tap water is accumulated to improve water quality. However, attention should be paid to the presence or absence of diseases in fish to prevent water pollution.

Pot soil temperature can directly affect the water absorption function of orchid roots. Therefore, the irrigation water temperature should be very close to the temperature and air temperature of the soil in the basin. In the hot summer. If the flowerpot and the soil are heated by direct sunlight and suddenly poured with cold water, the temperature difference between them is too large, which will destroy the normal absorption function of the root system and affect the physiological balance. Therefore, watering orchids in summer should be carried out in the early morning and evening, when the water temperature is close to the soil temperature. It is best to bury the reservoir or water storage tank in the soil for shade, so that the water temperature will not be too high in summer.

(8) watering method. Commonly used orchid watering methods are watering, spraying and soaking. Water is usually made of kettle, ladle and water pipe. When watering, water is slowly injected from the edge of the basin, so that the water is gradually immersed in the lower center. Don't suddenly fall in the middle of the leaf bundle, and don't let water splash on the pot soil to pollute the leaves. Spray water to soak the whole basin, not "half basin", that is, there is water on the surface and the lower layer can't get water. If half water is poured for a long time, the surface is wet and the inside is dry, so that some orchids can't absorb water for a long time and dry up, while the above orchids grow upside down, and the scattered land bends in the surface soil. In order to save trouble, many people directly connect a rubber hose to tap water and water orchid pots, which is very harmful: First, untreated tap water and bleach are harmful to orchids; Secondly, there is a big difference between water temperature and soil temperature; Thirdly, watering cannot be treated differently according to different situations.

The method of spraying water is to spray water on the leaves with a watering can, which can not only increase the air humidity and soil moisture, but also wash the dirt off the leaves. This method is often used in orchid growing season. Don't spray too much water at a time, because there is no running water on the leaves. Too much water in the heart of the leaf will spoil the new seedlings for a long time. The nozzle hole of watering can should be thin and dense, and the water droplets should be thin and uniform.

The soaking method, also known as soaking in water, is to put the bottom of the basin into shallow water and let the water gradually wet the basin soil. The soaking time should not be too long. Take out the basin as soon as the topsoil is wet. This method can keep the orchid leaves clean. In the dry season, you can also put the blue flowerpot in the shallow water tray. The flowerpot can absorb the accumulated water in the tray and then soak the pot soil to maintain a relatively stable soil humidity. The disadvantage is that the bottom hole of the flowerpot is blocked by water, and the air permeability is affected to some extent.

Fat.

(3) Fertilization method. Fertilization must be based on organic fertilizer, which can make the soil loose and have a good structure, which is conducive to the growth of orchids. Want to be thin and fat, that is, the previous experience "should be diligent and smooth, not sudden and thick", that is, people now use less and eat more. When applied, the water and fertilizer should be diluted properly, and then poured into the rhizosphere with a watering can to avoid polluting the orchid leaves.

If chemical fertilizer is used, the concentration will be even lower. In the growing season of orchids, 2‰ urea and 2‰ potassium dihydrogen phosphate aqueous solution can be used for topdressing for 2-3 times.

8. Ventilation is also very important in orchid cultivation management, but it is often ignored by people. 146 Zhu Hongxinsu (Beijing) is well ventilated, constantly supplying fresh air for orchids, fully carrying out photosynthesis, increasing the production of nutrients, promoting metabolism, and making orchids flourish. The ventilation of orchid house and shade shed can adjust its temperature and humidity, which is beneficial to the growth of orchids and can also reduce the occurrence of pests and diseases. Orchid brown spot disease and white silk disease mostly occur in poorly ventilated environment.

Orchid planting sites must be open, the terrain should be slightly higher, the flower beds should not be low, and attention should be paid to frequent ventilation. Orchids prefer soft wind and gentle wind to sharp wind, and try to avoid too cold and too strong wind. The arrangement of pots should be sparse but not dense, and enough distance should be kept between pots to avoid the wind-blown blades rubbing against each other. If the site is small, the flower stand can be built into a trapezoid, which is beneficial to ventilation, management and viewing. The plants in each flowerpot should not be too dense. If the plants are too dense, they should be ploughed and planted in time. Weeds, diseased leaves and fallen leaves of trees in the basin are often removed to facilitate ventilation in the basin.

Daily work of cultivating orchids all year round;

In spring, take off the plastic film on the greenhouse before and after Qingming, and then water it once; After a few days, apply 15-20 times diluted duck feather water or cake fat water. At the same time, spraying 1‰ omethoate (containing 40% active ingredients per mu) to kill insects once.

From May to July, apply 5% duck feather water or fat water prepared from cake fertilizer once a month. Apply 3 ‰-5 ‰ compound fertilizer once in August. Fertilization will not be applied after autumn.

Autumn management is extremely important. We sum it up in two words: "Autumn training". That is, orchids will not be fertilized after autumn, and water control will increase light and promote early maturity. Potted orchids generally follow the golden rule of "no spring, no summer, no autumn and no winter". But planting orchids underground is not entirely correct. Dry autumn is better than wet autumn. The reasons are as follows: (1) Although the air is dry in autumn, there is still "ground gas" rising in the soil, which will not cause serious water shortage; Moreover, drought can exercise the cold tolerance of orchids and prepare for wintering. "Autumn refining" can promote nutrients to gather in pseudobulb, increase pseudobulb protoplasm concentration, lower freezing point and avoid freezing injury. If orchid seedlings flourish in autumn, they will suffer from freezing injury in case of cold current and sudden drop in temperature. Orchids planted in the ground cannot be moved indoors before the arrival of severe winter, and can only survive after "autumn tempering".

165438+ October is the peak season of orchids, and the main work is to prepare for the overwintering of orchids. Remove the upper sunshade net first, and then install the plastic shed. The two ends of the greenhouse will not be closed until the temperature drops significantly, and the ventilation will not be turned on until noon on a sunny day. 1: 1 should be sprayed this month.

In the severe winter season, it is not easy to water, and the other is to increase the light appropriately. The so-called "moderate" means that the temperature is higher in some sunny days in winter. Especially in the warm winter in recent years, it is necessary to lay a lower sunshade net to prevent the temperature in the shed from rising and falling. If the shading net is not put down and the temperature in the shed reaches 18℃-22℃ for several days, some new buds will sprout. Once the cold current comes, the temperature will drop sharply, and there is no doubt that it will be frostbitten. Therefore, it is not easy to create a dormant environment for orchids in winter.

In early spring, there are frequent cold and warm air activities in the earth, so management should be more careful, otherwise the blue seedlings that consume nutrients will easily turn yellow after a winter. To gradually and moderately increase the light, the plastic film should not be removed too early, and it will not be removed until the weather is fine and stable in early April.