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Gold Dust Croton Blackening Leaves: Sun, Water, or Cold?

Your Codiaeum variegatum 'Gold Dust' crotons turning black and crispy suggests one of three issues—despite moving them to morning sun only.

Likely Causes

CauseSignsFix
Overwatering / Poor DrainageBlack, mushy spots; soil stays wet; pot has no drainageRepot into well-draining mix; water only when top 2" dry; ensure drainage holes
Cold DamageBlackening after cold nights; windy location; temps below 50°F (10°C)Move indoors or to protected area; avoid drafts
Sunburn (Paradoxically)Bleached then black patches on leaves facing sunBright indirect light only; no direct afternoon sun

Critical Questions

  • How often do you water? (Should be ~weekly in summer, less in winter)
  • What are night temperatures?
  • Do pots have drainage holes?
  • Your location/zone?

Immediate Steps

  • Check soil moisture deep in pot—soggy bottom = root rot.
  • Remove blackened leaves (they won't recover).
  • Ensure excellent drainage.
  • Provide bright, indirect light (east window ideal).

Crotons need consistent warmth, high humidity, and careful watering. Black leaves usually mean root or cold stress—not sun deficiency.

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