Nepenthes rajah Refusing to Pitcher After 7 Years: Light and Temperature

Grower (Eureka, CA coastal) 10 yrs highland Nepenthes success. N. rajah 7 yrs—grows but never traps. Medium light, peat/chips/charcoal/sphagnum/perlite, lots of water, highland temps, weak foliar orchid fertilizer.

Notorious Non-Pitcherer—Needs Perfect Conditions

Even we struggle. Wild: sub-alpine, full sun, cool temps. Days 65–80°F, nights low 50s–mid 40s. Your coastal climate likely cloudy (like OR coast). May need artificial T5 lights in winter (best pitcher chance). Colorado grower got huge pitchers with full sun + swamp coolers/misters keeping <80°F.

Good growing!
Jacob Farin