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Root Rot in Mammillaria Hahniana
verifiedReviewed by the GreenScout Team
Often called the Old Lady Cactus, this charming mammillaria features fine white hair-like spines covering a small spherical body (2–3 inches diameter)
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Mammillaria Hahniana care requirements
These care conditions are most relevant to root rot in Mammillaria Hahniana. Check each one as a potential cause.
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Water
Water moderately during growing season (spring/summer) when soil is dry. Reduce water sharply in winter; water sparingly or not at all.
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Soil
Fast-draining cactus potting mix with extra perlite or coarse sand.
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Humidity
Very low humidity (below 40%). High moisture promotes rot.
symptoms
Symptoms to look for in Mammillaria Hahniana
- fiber_manual_recordBrown, mushy roots
- fiber_manual_recordYellowing leaves
- fiber_manual_recordWilting despite moist soil
- fiber_manual_recordFoul smell from soil
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Common causes in Mammillaria Hahniana
- fiber_manual_recordOverwatering
- fiber_manual_recordPoor drainage
- fiber_manual_recordFungal pathogens
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How to diagnose root rot in Mammillaria Hahniana
Remove plant from pot. Healthy roots are white/tan and firm. Rotted roots are brown/black and mushy.
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How to treat root rot in Mammillaria Hahniana
Trim all rotted roots with sterile scissors. Treat with hydrogen peroxide solution. Repot in fresh, well-draining soil.
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Preventing root rot in Mammillaria Hahniana
Always use pots with drainage holes. Allow soil to partially dry between waterings. Use well-draining compost.