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Diagnosing Winter Growth Issues in Venus Flytraps and Tropical Sundews Under Artificial Lights

Temperate Plants Need Cool Dormancy

Flytraps need ~45°F cool period; blackening comes from keeping them warm. Dewthreads (Florida Giant, California Sunset) also need cooling. D. aliciae (tropical) may need weak foliar orchid fertilizer. D. spatulata rots in dense clumps—separate, fungicide. Wait for spring sun.

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