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Overwatering

Overwatering is the number one cause of houseplant death. It's counterintuitive — more water seems like more care — but roots need oxygen as well as moisture, and soggy soil suffocates them.

Symptoms

  • check_circleYellowing lower leaves
  • check_circleSoft, mushy stem base
  • check_circleWilting despite wet soil
  • check_circleMould or algae on the soil surface
  • check_circleSour or musty smell from the pot
  • check_circleBrown, mushy roots when inspected

Causes

  • arrow_rightWatering on a fixed schedule regardless of soil moisture
  • arrow_rightPot without drainage holes
  • arrow_rightDense soil that retains too much moisture
  • arrow_rightOversized pot holding more water than roots can absorb
  • arrow_rightReduced watering needs in winter not accounted for

How to Diagnose

Push your finger 2–3 cm into the soil. If it's still moist or wet, the plant doesn't need water. Overwatering signs compound over time — a single overwatering rarely causes immediate harm, but chronic overwatering leads to root rot.

Treatment

Stop watering. Let the soil dry out. If root rot is present (black, mushy roots): unpot, trim rotted roots, repot into fresh dry compost, and hold off on watering for a few days. Improve drainage if necessary.

Prevention

Always check soil moisture before watering. Use pots with drainage holes. Mix perlite into soil for better drainage. Water less in autumn and winter. Learn the specific watering needs of each plant species.