Causes of black spots on orchid leaves

The black spot on the leaves of orchids is caused by black spot, which can cause the leaves to turn yellow and wither. Therefore, it is necessary to solve the problem in time to promote the recovery of branches and leaves. The diseased leaves can be removed in time and can be sprayed with Bordeaux solution or topurazine or carbendazim until the disease is completely eliminated. Pay more attention to follow-up maintenance.

Causes of black spots on leaves of orchids

When black spots are found in orchid leaves, it is caused by a disease called black spot. In the early stage of black spot, there will be a reddish-brown or purplish-brown spot on the leaf surface, which will expand to dark black spot with the increase of the disease, which will eventually lead to the occurrence of yellow and withered leaves.

I. solution

1. In fact, it is relatively easy to solve the occurrence of black spot disease of one-leaf lotus. First of all, when the disease is relatively mild, remove some diseased leaves in time, then disinfect them with polygonum solution, and finally put them in a more ventilated environment, so that the leaves will gradually improve after a period of time.

2. When the occurrence of black spot is more serious, it should be sprayed with drugs in time. For example, the available drugs are spray-wet Bordeaux solution or topiramine, carbendazim, etc., which can be sprayed twice a week until the disease is completely eliminated.

II. Maintenance and management

In order to prevent a leaf lotus black spot phenomenon, in the usual maintenance to maintain enough light, pay attention not to be in the dark or exposure for a long time. Keep warm all the year round, pay attention to avoid low and high temperature environment. Watering and fertilizing must be in the right amount, and be careful not to have too much or too little.