Symptoms
- check_circleCircular or angular spots on leaves in shades of brown, black, or tan
- check_circleYellow halo surrounding the spots
- check_circleSpots merging in severe infections, causing large dead areas
- check_circlePremature leaf drop in badly affected plants
Causes
- arrow_rightFungal pathogens spread by water splash or wind
- arrow_rightBacterial infection, especially in warm, wet conditions
- arrow_rightOverhead watering keeping foliage wet
- arrow_rightPoor air circulation
- arrow_rightInfected plant debris left around the plant
How to Diagnose
Examine spot edges — fungal leaf spot often has a dark border; bacterial spots may have a water-soaked appearance. Send a sample for lab identification if treatment is not working.
Treatment
Remove and dispose of affected leaves. Improve air circulation. Apply a copper-based fungicide or neem oil spray. Avoid wetting foliage when watering.
Prevention
Water at the base rather than overhead. Space plants adequately for air flow. Clear fallen leaves regularly. Choose resistant varieties where available.
starsPremium Diagnosis
Upload a photo for AI-powered diagnosis and a personalised treatment plan.
Try Premium Free