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Leaf Spot in Trillium

How to identify and treat leaf spot in Trillium.

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Trillium care requirements

water
Consistently moist soil during growing season; prefers woodland conditions with leaf mulch that retains moisture
soil
Rich, organic, humus-dense soil similar to forest floor; slightly acidic pH preferred (6.0–6.5)
light
Partial to full shade; prefers dappled light under deciduous trees; avoid direct afternoon sun
symptoms

Symptoms to look for in Trillium

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

Common causes in Trillium

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

healing

How to treat leaf spot in Trillium

Remove affected leaves. Apply appropriate fungicide or bactericide.

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Preventing leaf spot in Trillium

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