Anthracnose of Houseplants
Colletotrichum gloeosporioides
Houseplants (general)fungal
A common fungal disease causing sunken, dark leaf spots on many broad-leaved houseplants.
Symptoms
Sunken, dark brown-to-black spots on leaves, sometimes with a yellow halo, that can enlarge and cause leaf tip dieback in humid conditions.
Cause & development
Documented on Dracaena, Rubber Plant, and other Ficus species among many broad-leaved houseplants. EPPO code COLLGL.
Favorable conditions
- •High humidity and wet foliage
- •Overhead watering that wets the leaves
- •Poor air circulation
Management
- 1Avoid wetting foliage when watering
- 2Remove and discard affected leaves
- 3Improve air circulation around the plant
- 4Isolate new plants until confirmed healthy
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