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Leaf Spot in Phlox Paniculata

How to identify and treat leaf spot in Phlox Paniculata.

potted_plant

Phlox Paniculata care requirements

water
Keep soil consistently moist but not waterlogged; water deeply 1–2 times per week depending on rainfall
soil
Well-draining, fertile soil with organic matter; pH 6.0–7.0
light
Full sun to partial shade; 6+ hours of direct sunlight daily for best flowering
symptoms

Symptoms to look for in Phlox Paniculata

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

Common causes in Phlox Paniculata

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

healing

How to treat leaf spot in Phlox Paniculata

Remove affected leaves. Apply appropriate fungicide or bactericide.

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Preventing leaf spot in Phlox Paniculata

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