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Root Rot in Mammillaria Spinosissima
verifiedReviewed by the GreenScout Team
A densely spined mammillaria forming compact rosettes 3–4 inches tall with formidable sharp spination covering the entire body
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Mammillaria Spinosissima care requirements
These care conditions are most relevant to root rot in Mammillaria Spinosissima. Check each one as a potential cause.
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Water
Water thoroughly during growing season when soil is completely dry. Minimize water in winter, watering only sparingly if at all.
compost
Soil
Very gritty, fast-draining cactus mix. Add extra perlite, pumice, or coarse sand to prevent moisture retention.
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Humidity
Very low humidity required (below 40%). Damp conditions invite rot.
symptoms
Symptoms to look for in Mammillaria Spinosissima
- 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 Spinosissima
- fiber_manual_recordOverwatering
- fiber_manual_recordPoor drainage
- fiber_manual_recordFungal pathogens
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How to diagnose root rot in Mammillaria Spinosissima
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 Spinosissima
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 Spinosissima
Always use pots with drainage holes. Allow soil to partially dry between waterings. Use well-draining compost.