Why do the leaves of gardenias have black spots?
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Why do the leaves of gardenias have black spots?
The appearance of black spots on the leaves of gardenias is likely due to an infection of black spot disease. Black spot disease usually occurs because the plants have been growing in a high temperature and humidity environment, which fosters various bacteria and fungi, leading to the emergence of black spot disease. In the early stages of the disease, the leaves will show irregular black spots of varying sizes, and it is necessary to promptly remove the affected leaves to prevent the deterioration of the condition. Also, ensure good ventilation in the environment and use medication promptly.
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