Leaf Spot Disease on Houseplants; Causes, Symptoms, Treatment and Prevention


Houseplant Disease, Leaf Spot

Leaf Spot Disease Causes & Symptoms

Leaf Spot Disease is characterized by brown, moist spots on the foliage. In a serious attack the spots can enlarge and merge, killing the whole leaf. The disease is caused by various bacteria and fungi.

Many houseplants can be infected by leaf spot diseases but some plants like Citrus, Dracaena and Dieffenbachia are highly susceptible to this disease.

Treatment for Leaf Spot Disease on Houseplants

  1. Remove and burn the affected parts to reduce the risk of spread to the rest of the houseplants.

  2. Spray the affected plant with a systemic fungicide as indicated by the manufactuere. Ensure to cover all the parts with the fungicidal solution.

  3. Keep the plant on the dry side; withhold watering for 7-10 days to allow the plant time to recover.

How to Prevent Leaf Spot Disease on Houseplants

  1. Maintain the plant properly pruned to allow light penetration and to reduce the breeding grounds for this disease.

  2. Occasionally, clean the leaves to reduce the disease occurence.

  3. Do not mist or wet the foliage during watering to minimize the disease infestations.

  4. Improve the ventilation for the plant to discourage the disease.

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