Cercospora Leaf Spot of Houseplants
Cercospora sp.
Houseplants (general)fungal
A fungal leaf spot genus affecting a wide range of ornamental foliage plants.
Symptoms
Small, circular, tan-to-gray spots with darker margins scattered across leaves, occasionally coalescing in humid conditions.
Cause & development
A large genus with species documented across many ornamental foliage houseplants. EPPO code 1CERCG.
Favorable conditions
- •High humidity and wet foliage
- •Poor air circulation
- •Crowded plantings
Management
- 1Avoid wetting foliage when watering
- 2Remove affected leaves
- 3Improve air circulation and spacing
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