Mold on echeveria
What's Happening
Succulents in high-humidity environments or with poor airflow are prone to fungal surface mold on soil. This occurs when organic soil components remain moist for extended periods, promoting decomposition and fungal growth. While rarely fatal to the plant, it indicates suboptimal conditions that can lead to root issues.
How to Fix It
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1. Gently scrape off surface mold with a sterile spoon to remove visible spores
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2. Increase airflow immediately with a small fan or by moving to a breezier location
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3. Allow soil to dry completely - withhold water until top 2-3 inches are bone dry
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4. If mold returns, repot in fresh sterile mix with higher inorganic content (60-70% grit)
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5. Apply diluted neem oil or cinnamon powder to soil surface as preventive antifungal treatment
How to Prevent It
Use gritty, inorganic-heavy soil mixes (50-70% perlite/pumice); maintain humidity below 50% for most succulents; ensure strong airflow with fans or open windows; water at soil level avoiding wetting leaves; allow soil to dry completely between waterings; apply cinnamon powder to soil surface as natural antifungal