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Downy Mildew in Butternut Squash
How to identify and treat downy mildew in Butternut Squash.
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Butternut Squash care requirements
water
Water deeply 1–2 inches per week during growing season; reduce watering as fruits mature to concentrate sugars; allow soil surface to dry between waterings
soil
Well-draining, nutrient-rich soil with pH 6.0–6.8; amend with 2–3 inches of compost before planting; prefers warm soil
light
Full sun; requires 6–8 hours of direct sunlight daily for optimal vine growth and fruit maturation
symptoms
Symptoms to look for in Butternut Squash
- fiber_manual_recordYellow patches on upper leaf surface
- fiber_manual_recordGrey-purple fuzzy growth on undersides
- fiber_manual_recordWilting
help
Common causes in Butternut Squash
Caused by Peronospora and Pseudoperonospora species. Spreads in cool, humid conditions.
healing
How to treat downy mildew in Butternut Squash
Remove affected material. Apply copper fungicide or phosphonate.
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Preventing downy mildew in Butternut Squash
Avoid overcrowding. Water in morning. Choose resistant varieties.