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Leaf Spot in Lemon Balm

How to identify and treat leaf spot in Lemon Balm.

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Lemon Balm care requirements

water
Keep soil consistently moist but well-draining; water regularly, especially during dry spells. Tolerates some drought once established.
soil
Average to fertile soil with good drainage; pH 6.0–7.5. Not fussy about soil type but prefers moisture-retentive conditions.
light
Full sun to partial shade (4–6 hours of sun daily); tolerates shade but grows more vigorously in sunlight.
symptoms

Symptoms to look for in Lemon Balm

  • fiber_manual_recordCircular brown or black spots
  • fiber_manual_recordYellow halos around spots
  • fiber_manual_recordPremature defoliation
help

Common causes in Lemon Balm

Multiple fungal and bacterial pathogens. Favoured by wet foliage and warm temperatures.

healing

How to treat leaf spot in Lemon Balm

Remove affected leaves. Apply appropriate fungicide or bactericide.

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Preventing leaf spot in Lemon Balm

Water at soil level. Improve air circulation. Practise crop rotation.