Nepenthes rafflesiana Red Leaf Spots: Mold or Light Response?

Two Possibilities

Rub-off spots: Mold on nectar. Increase air flow and light to discourage.
Fixed coloration: Natural red pigment from high light. Normal for many species (e.g., N. sanguinea, N. truncata).

Christopher

Carnivorous Plants: Ligustrum Leaf Issues: Diagnosing Tiny Leaves and Browning in Florida; Sticky Residue on Stephanotis: Honeydew and Sooty Mold; Gardenia Leaf Curl and Powder After Insecticide Spray; Bougainvillea Fungal Leaf Spot: Diagnosis and Recovery Plan; Yucca Natural Leaf Drop vs. Nutrient Deficiency; Schefflera Dropping Leaves? Check Watering and Root Health; Nepenthes × miranda Acclimation: Old Pitchers Die, New Ones Form; Cephalotus Non-Carnivorous Leaves Yellowing in Spring: Normal; Identifying a Leafless Mystery Plant: Why Foliage Is Essential for Diagnosis; Lucky Bamboo Yellowing: Light, Water, and Root Health

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