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Overwatering 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 overwatering 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_recordYellowing lower leaves
  • fiber_manual_recordSoggy soil
  • fiber_manual_recordAlgae or moss on soil surface
  • fiber_manual_recordRoot rot
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Common causes in Mammillaria

  • fiber_manual_recordToo frequent watering
  • fiber_manual_recordPoor drainage
  • fiber_manual_recordWrong pot size
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How to diagnose overwatering in Mammillaria

Push finger 2 inches into soil. If wet, overwatering is occurring.

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How to treat overwatering in Mammillaria

Allow to dry out completely. Check drainage holes. Remove rotted roots and repot.

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Preventing overwatering in Mammillaria

Always check soil before watering. Use pots with drainage holes. Choose well-draining compost.

Other Mammillaria problems