What about the latest yellowing leaves of Dendrobium candidum?

Dendrobium candidum has high medicinal value, and there are many people who develop the cultivation of Dendrobium candidum. I believe that many bases for planting Dendrobium candidum have encountered such problems. When Dendrobium candidum is planted, the leaves turn yellow and some are dry. Do you know why? Do you know what to do with it? Let's take a look at it together.

Matrix discomfort

[reason] the aerial roots of Dendrobium candidum are exposed in the air, absorbing air and Rain Water.

[methods] the first choice of matrix materials is bark, followed by sawdust, which need to be crushed, sterilized and fermented, usually mixed with several materials and substrates of different thickness.

The matrix is too wet

[reason] too much watering causes the substrate to be too wet and the roots to rot.

[methods] potted Dendrobium candidum needs to be watered every other week or two weeks. after watering thoroughly, it is usually sprayed, and it is necessary to control the air circulation on the balcony. The stem and rhizome of Dendrobium candidum are not dead, so they can germinate again after spring, but watering should be controlled to prevent rotting roots.

Lack of water and drought

Lack of water leads to yellow leaves. Some growers control too much water, coupled with the current relatively low humidity, which leads to the occurrence of yellow leaves. Although it is winter now, water control should not be excessive, especially Dendrobium candidum planted in bed. The phenomenon of yellow leaves caused by lack of water is more common in winter.

[method] watering is suitable for slightly acidic to neutral water, and there will be too much calcium, magnesium and other minerals in bogey water. Sufficient water is required in spring, summer and early autumn, and gradually enter a dormant state after the Mid-Autumn Festival, and the amount of watering should be reduced until watering is completely stopped. But before the leaves turn yellow, they begin to reduce watering, further decrease with the yellowing and shedding of the leaves, and stop watering when the leaves fall out. In North China, it is necessary to maintain a high indoor air humidity after the water is cut off to avoid pseudo-bulb drying and shrinking. If the room is too dry, the basin can be watered every 1 to 2 weeks.

There are too many miscellaneous bacteria.

[reason] there are too many miscellaneous bacteria in the substrate, and the lack of competitiveness of symbiotic bacteria in the root system leads to the yellowing of leaves.

[methods] fermented bark or sawdust, coconut shell, bagasse, rotten fallen leaves or moss should be fully dried in the sun and treated with caprylic acid to kill the remaining pests and eggs in the soil.