What is the reason for the black spots on the leaves of orchids?

The black spots on the leaves of orchids may be caused by the low temperature in the place where it is raised, so it should be transferred to a warm room above 15 ℃ for maintenance. It may also be caused by illness, so move it to a well-ventilated position, cut off the diseased leaves, and spray for treatment. It may also be caused by excessive watering. At this time, the rotten roots should be cut off first, and then planted in the new soil for maintenance.

1. The temperature is too low

1. Reason: if you stay in a cold environment for a long time, the leaves of orchids may be frostbitten, resulting in black spots.

2. Treatment: transfer it to an environment of more than 15 ℃ and give it some soft sunlight. After keeping it for a while, it will recover.

2. Occurrence of diseases

1, the reason: it is relatively delicate, if the maintenance environment is relatively poor, it may be infected by some bacteria, the occurrence of diseases. This may also lead to black spots on its leaves.

2. Treatment: put it in a well-ventilated place and cut off all the leaves with disease spots with scissors. After that, spray it with fungicide every 3-5 days until it recovers.

Third, overwatering

1. Reason: in an overly waterlogged environment, its root system may be waterlogged, resulting in poor growth and black spots on its leaves.

2. Treatment: take it off the basin, cut off the root that has become black, and then plant it in the new flower soil for maintenance.