Mount Hamiguitan
The species grows terrestrially in primary montane forest and forest margins. It is not found in the so-called Bonsai Forest, a region of stunted vegetation on the plateau below the summit ridge of Mount Hamiguitan. It typically grows in partial shade and is frequently exposed to heavy downpours. While Mount Hamiguitan is an ultramafic mountain, "N. hamiguitanensis" does not necessarily grow in an ultramafic substrate, owing to the high humus content of the forest underlayer. At the type locality, "N. hamiguitanensis" occurs at an average density of around two to three plants per 50 m2, as estimated by eye. Only seedlings and mature, climbing plants have been observed, with no records of larger rosette plants bearing lower pitchers.