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Leaf Spot in Calendula

How to identify and treat leaf spot in Calendula.

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Calendula care requirements

water
Water moderately; drought-tolerant once established. Allow soil to dry slightly between waterings. Avoid overhead watering to prevent disease.
soil
Tolerates poor to average soil; well-draining loamy or sandy soil preferred. pH 6.0–8.0. Does not require rich soil.
light
Full sun (6–8 hours daily) promotes best flowering; tolerates light afternoon shade.
symptoms

Symptoms to look for in Calendula

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

Common causes in Calendula

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

healing

How to treat leaf spot in Calendula

Remove affected leaves. Apply appropriate fungicide or bactericide.

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Preventing leaf spot in Calendula

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

Leaf Spot in Calendula — Symptoms & Treatment | GreenScout