What if the leaves of crab claw orchid turn yellow?

The stem of crab claw orchid often hangs because it is too long, which is very suitable for window sill, entrance and exhibition hall decoration. Yellowing of leaves is a common problem in the process of breeding crab claw orchid, because there are many reasons why crab claw orchid leaves are yellow. therefore, we need to take more careful care and maintenance, let's take a look at the crab claw orchid leaf yellowing how to do!

Environmental conditions for the culture of crab claw orchid

Crab claw orchid is commonly cultivated in the tropics and subtropics all over the world. it likes cool and warm environment, is more tolerant to drought, is afraid of high temperature and heat in summer, and is more tolerant to shade. The suitable temperature for growth is 20 ~ 25 ℃, and the temperature during dormancy is about 15 ℃. Like loose, rich in organic matter, good drainage and ventilation of the matrix. Crab claw orchid is a short-day plant, under the condition of 8-10 hours of sunshine every day, it can blossom in 2-3 months, and the flowering period can be adjusted by controlling light.

The reason for the yellowing of the leaves of crab claw orchid

The yellowing of crab claw orchid leaves is nothing more than the difference between the environment and the ideal environment, such as lack of nutrients, low humidity, cold current invasion, soil consolidation, diseases and insect pests, basin soil is too dry, and so on, which can be excluded one by one according to these reasons in the process of culture. There are two important pathogenic factors worthy of our attention. First, the crab claw orchid will go through a period of dormancy and the plant will stop growing. At this time, too much watering and damp basin soil will lead to yellowing of the leaves. Second, the light is strong in spring and summer, and the leaves will turn yellow if they are not shaded outside.

What if the leaves of crab claw orchid turn yellow?

1. Fertilizer: crab claw orchid has little demand for fertilizer in the normal growing period, but it needs to supplement some fertilizer in time after entering the bud breeding period, so as to make the plant grow vigorously, the flower bud differentiates well and the flower bud develops normally and fully. If there is a lack of fertilizer, buy some potassium dihydrogen phosphate, which can be mixed with water and watered so that it can be relieved.

2, watering: watering must be controlled, not too often, the surface of the basin soil is not dry, watering can be thoroughly. Especially in winter, the surface of the basin soil must be dry. Of course, it is only drought-tolerant, not drought-loving plants, and the basin soil should not be allowed to be too dry, otherwise the same problem will occur. It is necessary to ensure adequate room temperature and no cold wind.

3. Humidity: the crab claw orchid should not be placed on the radiator or in the tuyere of the air conditioner, otherwise the dehydration of the leaves will be accelerated and the leaves of the plant will turn yellow.

4. Pests: it is necessary to strictly guard against the harm of red spiders and shell insects, and special insecticides can be sprayed to control them when they occur, such as mite net, control mites, killing phosphorus, scale and so on.

5. Dormancy: crab claw orchid has two prosperous periods and two semi-dormant periods every year, which should be watered and fertilized according to this growth law. Because of the preference for half-shade, it is necessary to choose different locations in different seasons.