Why does your Rieger Begonia have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.
Rieger Begonias are tropical plants that require high ambient moisture. When the air is too dry, the transpiration rate exceeds water uptake, causing the delicate leaf margins to desiccate and turn brown.
Excessive buildup of mineral salts from fertilizers in the growing medium can draw moisture out of the leaf edges via osmosis. This is common in Begonias if they are fertilized heavily without regular flushing of the soil.
Rieger Begonias prefer consistently moist but well-draining soil. Allowing the rhizome and root system to dry out completely before watering causes physiological stress that manifests as necrotic leaf tips.
Begonias can be sensitive to certain chemicals found in municipal tap water, such as chlorine or fluoride. These elements can accumulate in the leaf tissues and cause tip burn.
Your plant might also be experiencing one of these issues:
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