Troubleshooting Dying Tips on Nepenthes aristoloides

A grower's Nepenthes aristoloides in a terrarium (CFL lights, 71°F, 75% humidity, live sphagnum) showed dying tips on new growth. Possible causes: heat from CFLs, overly wet/packed media, thrips, or insufficient night cooling.

Diagnosis Checklist

1. Light heat: CFLs run hot. Move plant further away or switch to cooler T8/T5 tubes.
2. Media aeration: Packed sphagnum suffocates roots. Repot into a loose mix (sphagnum + orchid bark, coconut chips, or perlite). Handle roots gently.
3. Watering: Keep soil damp, not soggy. No standing water in tray.
4. Pests: Check leaf undersides with a hand lens for thrips (tiny elongated insects). Treat with appropriate insecticide if found.
5. Night temperatures: Aim for low 60s°F (15–18°C) at night; this species prefers cool nights.

Key Advice

Address the most likely culprits first: light heat and media compaction. A cooler, well-draining setup often resolves the issue.