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Brown Spots in Geranium Zonal
verifiedReviewed by the GreenScout Team
Zonal geraniums are reliable, frost-sensitive perennials with dense clusters of red, pink, white, or bicolor flowers and distinctive dark-banded foliage that gives them their name
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Geranium Zonal care requirements
These care conditions are most relevant to brown spots in Geranium Zonal. Check each one as a potential cause.
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Light
Full sun (6–8 hours daily); bright light indoors; insufficient light causes leggy growth
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Water
Water moderately; allow soil to dry between waterings; overwatering is the primary cause of decline
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Humidity
Low to moderate humidity; dislikes excessive moisture in air
symptoms
Symptoms to look for in Geranium Zonal
- fiber_manual_recordBrown patches on leaves
- fiber_manual_recordCrispy brown areas
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Common causes in Geranium Zonal
- fiber_manual_recordFungal leaf spot
- fiber_manual_recordSunburn
- fiber_manual_recordBacterial blight
- fiber_manual_recordCold damage
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How to diagnose brown spots in Geranium Zonal
Sunburn: bleached patches facing light source. Fungal: brown spots with rings. Bacterial: water-soaked spots turning brown.
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How to treat brown spots in Geranium Zonal
Remove affected leaves. Treat with appropriate fungicide or bactericide. Adjust light exposure.
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Preventing brown spots in Geranium Zonal
Avoid direct midday sun. Improve air circulation. Water at soil level.