Nepenthes northiana lives as a lithophyte, inhabiting limestone rock walls near Bau on the island of Borneo. It's often regarded as the most beautiful Nepenthes in the genus. But it's reputation as a difficult grower is not far fetched either. Though this can be overcome by giving the plant consistent warm temperatures with high humidity. We've tested growing our plants under a variety of soils (mineral, coconut, sphaghnum based) and most seemed equivalent as long as you make sure there is good drainage so the roots are aerated. Though it's a warm grower, it does not appreciate wet feet. Nepenthes northiana is particularly prone to transplant disturbance so make sure to keep them very humid as they acclimate.