The orchid leaves are withered and yellow. What's going on?

There are many reasons for the drying up of orchid leaves. If the soil is not suitable, the mixture of fine sand and humus should be re-selected, too little moisture should be watered in time, and the watering principle of eight points of dryness and two points of moisture should be maintained after the growth is restored. if the light is too strong, the orchid will be moved to a semi-overcast environment, and disease prevention can be done.

1. Improper soil

In the process of orchid growth, it is best to change the basin every 2 to 3 years. If the selected soil drainage is very poor or the soil quality is metamorphic, it is easy to lead to the phenomenon of yellow leaves in the plant. At this time, the soil should be replaced and the mixed soil of fine sand and humus soil should be re-selected. Disinfect the soil before cultivation before re-potting.

2. Too little water is more suitable for orchids to grow in the environment with high humidity, so, if the soil lacks water or watering too little, it will lead to stagnation of root growth and yellowing of leaves, so it is best to pour water in time and put it in a ventilated environment. After the leaves return to growth, keep the watering principle of eight-minute dry and two-minute wet.

3. Excessive illumination

Orchids are semi-negative plants, if the flowerpot is placed in the hot sun for a long time, it is easy to cause the leaves to yellow and dry, and a large number of withered and dead, it is best to move the orchid to the semi-shaded environment, if put outside, it is necessary to carry out corresponding shading treatment.

4. When applying too much fertilizer to orchids, it is best to keep the principle of a small number of times. If you fertilize too often, the roots will rot and the leaves will turn yellow and wilt. At this time, you should stop fertilizing in time. In the peak growing season in daily maintenance, you can apply fermented liquid fertilizer solution every two weeks, and then pour water into it.

5. Disease prevention

The common diseases of orchids are mainly leaf spot and brown spot, which mainly erode the leaves in the form of fungi, which will slowly cause the leaves to turn yellow and wilt, which need to be destroyed in time, and disinfect the soil with carbendazim solution. then spray omethoate solution to control.