zz plant

Zamioculcas zamiifolia

2 diagnoses
Avg. confidence 90%

Diagnoses

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drooping

GR-8115
95%

Cause

Chronic overwatering in low-light Nordic winters leads to basal stem necrosis and root death. Succulent rhizomes rot in dense soil when transpiration slows.

Solutions

  • Downsize to a pot 1/2 current size to keep roots tight and promote faster drying.
  • Amend soil with 40-50% perlite or pumice for superior aeration and drainage.
  • Wait to water until rhizomes begin to wrinkle slightly (usually 2-3 times total between late fall and early spring).

Prevention

Supplement low natural light with full-spectrum LEDs (12-14 hours/day) in high-latitude regions.

Confidence

95%

yellow leaves

GR-8113
85%

Cause

ZZ plants are marketed as 'low light,' but extreme low light (<500 foot-candles) leads to reduced photosynthesis, yellowing (chlorosis), and etiolation.

Solutions

  • Relocate to bright indirect light (near an east/west window).
  • Verify soil is dry before watering to rule out concurrent root rot.
  • Trim yellow leaves to redirect energy to the rhizome.

Prevention

Position in consistent medium indirect light; use grow lights if the room has no windows.

Confidence

85%
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