Target Spot (Corynespora Leaf Spot) of Houseplants
Corynespora cassiicola
Houseplants (general)fungal
A fungal leaf spot producing distinctive target-like rings on foliage.
Symptoms
Brown, concentrically ringed "target spot" lesions on leaves that can enlarge and merge in warm, humid conditions.
Cause & development
Documented on a wide range of ornamental foliage houseplants. EPPO code CORYCA.
Favorable conditions
- •Warm, humid conditions
- •Wet foliage
- •Poor air circulation
Management
- 1Avoid wetting foliage when watering
- 2Remove affected leaves
- 3Improve air circulation around the plant
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