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Leaf Spot in Acorn Squash

How to identify and treat leaf spot in Acorn Squash.

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Acorn Squash care requirements

water
Water deeply 1–2 inches per week; maintain consistent moisture during fruit development; reduce watering as fruits mature and begin hardening off
soil
Well-draining, fertile soil with pH 6.0–6.8; incorporate 2–3 inches of compost before planting; avoid compacted soil
light
Full sun; requires minimum 6–8 hours of direct sunlight daily for vigorous growth and fruit quality
symptoms

Symptoms to look for in Acorn Squash

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

Common causes in Acorn Squash

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

healing

How to treat leaf spot in Acorn Squash

Remove affected leaves. Apply appropriate fungicide or bactericide.

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Preventing leaf spot in Acorn Squash

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

Leaf Spot in Acorn Squash — Symptoms & Treatment | GreenScout