Spinach Downy Mildew: Yellow Spots & White Fuzz
Leaves problem · common pattern reported by gardeners · verify locally
What you'll see
- Yellow blotches on leaf tops
- Gray-purple fuzz underneath
- Leaves curl and die
Most common causes
- Downy mildew fungus in cool, humid weather
- Wet foliage
- Overcrowded rows
How to fix it
- Remove infected plants
- Improve spacing
- Apply copper fungicide early
Prevention: Resistant varieties (e.g. resistant hybrids) Water at soil level Good air flow
More Spinach problems
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Open the Spinach growing guide → · Planting calendar · Pest & problem diagnoser
ZoneFig content reflects widely published extension-service and gardening guidance. Symptoms and causes are common patterns, not a diagnosis for any individual plant — verify locally and treat conservatively.