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Brown Spots in Cardinal Flower
verifiedReviewed by the GreenScout Team
Lobelia cardinalis is a striking perennial featuring vibrant scarlet-red tubular flowers arranged on tall spikes that attract hummingbirds and butterflies
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Cardinal Flower care requirements
These care conditions are most relevant to brown spots in Cardinal Flower. Check each one as a potential cause.
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Light
Full sun to partial shade; performs best with at least 6 hours of direct sunlight daily
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Water
Consistently moist to wet soil required; ideal for boggy areas, streambanks, and rain gardens; do not allow to dry out
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Humidity
High humidity preferred; naturally suited to wet environments and benefits from consistent moisture
symptoms
Symptoms to look for in Cardinal Flower
- fiber_manual_recordBrown patches on leaves
- fiber_manual_recordCrispy brown areas
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Common causes in Cardinal Flower
- 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 Cardinal Flower
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 Cardinal Flower
Remove affected leaves. Treat with appropriate fungicide or bactericide. Adjust light exposure.
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Preventing brown spots in Cardinal Flower
Avoid direct midday sun. Improve air circulation. Water at soil level.