What causes black spots on orchid leaves

Black spots on orchid leaves may be caused by the temperature being too low where it is grown; in this case, it should be moved to a warm room above 15°C for care. It may also be caused by disease; in this case, move it to a spot with good air circulation, cut off the diseased leaves, and spray it with medicine for treatment. It may also be caused by overwatering; in this case, first cut off the rotten roots, then plant it in fresh soil for care.

1. Temperature too low

1. Cause: If it is kept in an environment that is too cold for a long time, the orchid's leaves may suffer frost damage, causing black spots to grow.

2. Treatment: Move it to an environment above 15°C and give it some soft sunlight. After caring for it for a while, it will recover.

2. Disease occurs

1. Cause: It is rather delicate. If the care environment is relatively poor, it may be infected by some pathogens and develop disease. This can also cause black spots to appear on its leaves.

2. Treatment: Put it in a place with good ventilation, and use scissors to cut off all the leaves with diseased spots. After that, spray it with a fungicide at a frequency of once every 3-5 days until it recovers.

3. Overwatering

1. Cause: In an environment that is too wet and waterlogged, its root system may suffer from waterlogging, causing poor growth and black spots on its leaves.

2. Treatment: Take it out of the pot, cut off the roots that have already turned black, then plant it in fresh flower soil for care.