Nepenthes ventricosa 'K': Sunburn, Pests, or Just Unhappy?

A grower's N. ventricosa 'K' has produced only poor leaves for a year, no pitchers. Moved from windowsill to partial sun outdoors. New leaves look better, but red patches on older leaves raise concern. Is it a lowland form? Pests?

Check for Pests First

Jeff Dallas recommends a hand lens to inspect leaf undersides for spider mites or thrips. If found, treat with appropriate insecticide or a No-Pest strip in a greenhouse. If no pests, it's environmental—possibly the move.

Temperature Considerations

• Some Nepenthes (like N. rafflesiana) show red patches if too cool.
• 'K' might be a lowlander wanting warmer nights (above 65°F).

Identity Question

Jeff notes the leaves don't look typically waxy for ventricosa. Without pitchers, ID is uncertain. The new growth looks promising, so patience is key.

Good Growing!
Jeff Dallas
Sarracenia Northwest
https://www.cobraplant.com