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The yellowing of the leaves of the orchid has a lot to do with the root system of the orchid, the root of the orchid is an aerial root, improper maintenance, it is easy to cause the root system of the orchid to rot, then it will lead to the slow growth of the orchid, or even stop growing new shoots, the placement of the orchid should be ventilated, overcome direct sunlight.
Planting of the garden.
When growing plants, the first and most important issue to consider is the soil, which you may have already encountered during the design of your garden.
Many of the new garden soils are now directly from construction waste, and many gardens have been planted for many years without any measures to protect the soil and increase soil fertility.
The better the soil fertility, the better it is for the growth of plants. If the topsoil of the plant is okay, but the subsoil has basically lost its fertility and needs to be replaced, then organic fertilizer must be buried, and the more the better.
When I say organic fertilizer, I mean a well-decayed mixture or manure, but it also includes mushroom-like compost and multi-purpose fertilizers. All of these fertilizers not only enhance soil nutrients, but also bind light, sandy soils together while loosening heavy soils.
In addition, the acidity and alkalinity of the soil must be determined, as different soil qualities will determine what kind of plants it is suitable for. Acidic soils are suitable for the growth of rhododendrons, such as rhododendrons and camellia. Alkaline soils are suitable for the growth of flowers such as clematis, drunken fish grass and carnations.
Neutral soils, on the other hand, can be used to grow a wide range of flowers. To determine the pH of the soil, you just need to buy some test materials.
There's also the big problem that irrigation water has different pH levels in different places, unless you have a bucket of stagnant water (because the rain is neutral), which is something that every gardener encounters. My advice is to plant according to the location, choose the right plants according to the nature of the soil, and let nature do its job. It would be unwise to let plants struggle to survive in an unsuitable soil environment.
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Hello, I'm glad about your problem, orchid leaves are yellow, you first look at whether it is a problem with the root system, if it is a problem with the root system, you can use Yanwo rooting agent, if it is not a problem with the root system, and then see if it is sunlight and moisture, the natural conditions are also very important, one by one to eliminate, you will eventually find a solution, I hope it can help you.
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Orchid leaves are yellow, new shoots are weak and slow to grow? If these 3 tricks go down, the problem will be solved!
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Orchid sprouts yellow is due to light, temperature, fertilization, watering caused by improper placement in the light every day, keep the most suitable growth temperature of 18-26 degrees throughout the year, apply thin liquid fertilizer every half month during the growth period, increase phosphorus and potassium fertilizer every month during the flower bud period, water every 2-4 days, and keep the soil moist.
First, the light is too strong
The yellowing of orchid sprouts is due to long-term exposure to too much light, and it is placed in a bright position every day to promote photosynthesis and promote the healthy growth of plants. Do a good job of shading in summer to avoid sun exposure. In winter, place in a warm location and avoid being in a dark environment.
Second, the temperature is improper
The yellowing of orchid sprouts is due to long-term exposure to high and low temperatures, because the most suitable growth temperature is between 18 and 26 degrees. In summer, when the temperature exceeds 35 degrees, take measures to cool down and move indoors to a cool environment. In winter, when the temperature is lower than 5 degrees, take measures to keep warm and avoid frost damage.
3. Improper fertilization
Orchid sprouts yellow because of too little fertilizer or serious fertilizer damage, so it is necessary to apply the appropriate amount of fertilizer regularly, during the growth period can be applied a thin liquid fertilizer every half month, during the bud period to increase phosphorus and potassium fertilizer every month, and spray a potassium dihydrogen phosphate foliar fertilizer, to promote the branches and leaves to flourish and the flowers are colorful.
Fourth, improper watering
The yellowing of orchid sprouts is due to long-term lack of water or serious water accumulation, so an appropriate amount of water is needed during the growth period, such as watering every 2-4 days, keeping the soil moist with the amount of water, and paying attention to not having stagnant water. In addition, spray wet water around it to keep the air humidity at 56%.
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Causes of yellowing and solutions:
1. Water yellow. Caused by over-frequent watering, it is characterized by no obvious change in old leaves and yellowing of young leaves; Water should be controlled immediately.
Second, dry yellow. Due to the lack of water, caused by drought, it is characterized by the bottom up of the old leaves first yellow, if the lack of water for a little longer, the whole plant yellow leaves, or even death, should be watered when the rough blue. 3. Fat yellow.
Caused by excessive application of slippery pants fertilizer or too high concentration, the special rock lifting point is that the young leaves are hypertrophied, shiny, and uneven; Fertilizer, cultivation and watering should be controlled.
Fourth, hungry yellow. Due to the lack of fertilizer, low fertilization concentration, and the fertilization interval is too long, it is characterized by the first yellow at the young leaves and young stems, if this phenomenon is not fertilized in time, it will also cause the whole plant yellow leaves and even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning.
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The reasons why orchids do not grow new leaves are as follows:
1. The growth of orchids is quite slow, and it takes time to grow new leaves;
2. The budding period of all kinds of orchids is fixed by orange trapping, and the orchid will not grow new leaves if the time is not enough;
3. The conditions for the growth of orchids are harsh, and improper maintenance of orchids will lead to the threat of orchid life, and it is impossible to grow new shoots and leaves.
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