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Black Spots in Plum Fruit
verifiedReviewed by the GreenScout Team
Plums are deciduous stone fruit trees that produce sweet to tart fruits in shades of purple, red, or yellow, typically ripening in late summer
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Plum Fruit care requirements
These care conditions are most relevant to black spots in Plum Fruit. Check each one as a potential cause.
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Humidity
Moderate humidity preferred. Good air circulation around canopy reduces disease risk; avoid overhead watering.
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Water
Deep, regular watering during growing season; reduce in dormancy. Keep soil consistently moist but not waterlogged. Drought stress can reduce fruit quality.
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Temperature
Suited to cool to temperate climates. Most varieties need 800–1,200 chill hours (below 45°F). Avoid frost pockets after flowering.
symptoms
Symptoms to look for in Plum Fruit
- fiber_manual_recordBlack or dark brown spots
- fiber_manual_recordSpots with yellow halos
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Common causes in Plum Fruit
- fiber_manual_recordFungal disease (black spot)
- fiber_manual_recordBacterial infection
- fiber_manual_recordSunburn
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How to diagnose black spots in Plum Fruit
Fungal spots: often circular with yellow margins. Sunburn: irregular bleached patches turning black.
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How to treat black spots in Plum Fruit
Remove affected leaves. Apply fungicide. Adjust sun exposure.
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Preventing black spots in Plum Fruit
Avoid wetting foliage. Provide adequate spacing. Remove debris.