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Root Rot in Mammillaria
verifiedReviewed by the GreenScout Team
A small, clustering mammillaria cactus with dense spination and vibrant magenta-pink flowers that bloom in rings around the plant
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Mammillaria care requirements
These care conditions are most relevant to root rot in Mammillaria. Check each one as a potential cause.
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Water
Water thoroughly during growing season (spring/summer), allowing soil to dry between waterings. Reduce watering significantly in winter to almost dry conditions.
compost
Soil
Gritty cactus mix with added perlite or coarse sand to ensure excellent drainage.
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Humidity
Low to very low humidity (below 50%). Avoid damp conditions.
symptoms
Symptoms to look for in Mammillaria
- 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
- fiber_manual_recordOverwatering
- fiber_manual_recordPoor drainage
- fiber_manual_recordFungal pathogens
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How to diagnose root rot in Mammillaria
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
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
Always use pots with drainage holes. Allow soil to partially dry between waterings. Use well-draining compost.