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Leaf Spot in Catharanthus
How to identify and treat leaf spot in Catharanthus.
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Catharanthus care requirements
water
Drought-tolerant once established; water when soil surface is dry; reduce watering in winter
soil
Well-draining soil; prefers slightly sandy or lean soil; avoid waterlogged conditions
light
Full sun (6+ hours daily); tolerates light shade but flowers best in strong sunlight
symptoms
Symptoms to look for in Catharanthus
- fiber_manual_recordCircular brown or black spots
- fiber_manual_recordYellow halos around spots
- fiber_manual_recordPremature defoliation
help
Common causes in Catharanthus
Multiple fungal and bacterial pathogens. Favoured by wet foliage and warm temperatures.
healing
How to treat leaf spot in Catharanthus
Remove affected leaves. Apply appropriate fungicide or bactericide.
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Preventing leaf spot in Catharanthus
Water at soil level. Improve air circulation. Practise crop rotation.