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Dogwood Anthracnose: Symptoms and Management

Leaves Persisting Through Winter? Could Be Anthracnose

A Michigan dogwood retained dead leaves all winter and showed thinning canopy. Classic signs of dogwood anthracnose (Discula destructiva), a serious fungal disease.

Integrated Management

  • Water during drought (avoid overhead irrigation)
  • Mulch 2–4″, keep away from trunk
  • Fertilize lightly with 10-10-10 (1 lb/inch trunk diameter)
  • Prune dead wood in dry weather; sterilize tools
  • Remove water sprouts; rake fallen leaves

Fungicide Options

If high risk or confirmed: myclobutanil (Immunox), propiconazole (Banner), or chlorothalonil (Daconil) at bud break and per label. Consider resistant Cornus kousa for replacement.

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