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Powdery Mildew in Strawberry Alpine

verifiedReviewed by the GreenScout Team

A small, delicious wild strawberry species that produces prolific tiny fruits throughout the growing season. A fungal disease that coats leaves, stems, and buds with a white or grey powdery substance. It rarely kills plants but weakens them significantly.

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Strawberry Alpine care requirements

These care conditions are most relevant to powdery mildew in Strawberry Alpine. Check each one as a potential cause.

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Light
Full sun to partial shade; 6+ hours of sun produces better fruiting
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Water
Keep soil consistently moist but not waterlogged; water deeply 2–3 times per week depending on rainfall
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Soil
Rich, well-draining soil with good organic matter; slightly acidic pH (6.0–6.5) preferred
symptoms

Symptoms to look for in Strawberry Alpine

  • fiber_manual_recordWhite or grey powdery coating on leaf surfaces
  • fiber_manual_recordAffected leaves yellowing and curling
  • fiber_manual_recordDistorted or stunted new growth
  • fiber_manual_recordPowdery patches on stems and flower buds
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Common causes in Strawberry Alpine

  • fiber_manual_recordHigh humidity combined with poor air circulation
  • fiber_manual_recordOvercrowded planting conditions
  • fiber_manual_recordWarm days and cool nights
  • fiber_manual_recordExcessive nitrogen fertilisation promoting soft growth
  • fiber_manual_recordWater-stressed plants are more susceptible
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How to diagnose powdery mildew in Strawberry Alpine

The white powdery coating is distinctive — unlike downy mildew, powdery mildew sits on the upper surface of leaves and can be rubbed off with a finger.

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How to treat powdery mildew in Strawberry Alpine

Remove and dispose of affected leaves. Spray with a diluted solution of baking soda (1 tsp per litre of water) or neem oil. Ensure good air circulation around the plant. In severe cases, use a fungicide labelled for powdery mildew.

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Preventing powdery mildew in Strawberry Alpine

Space plants adequately for air flow. Avoid overhead watering. Do not over-fertilise with nitrogen. Water in the morning so foliage dries before evening.

Other Strawberry Alpine problems

Powdery Mildew in Strawberry Alpine — Causes & Treatment | GreenScout