Nepenthes fusca can be viewed along the road leading to the disused Mamut Copper Mine, adjacent to Mount Kinabalu.
On Mount Mulu in Sarawak, N. fusca (found below 1200 m) appears to occupy a discrete altitudinal zone from N. vogelii (1200-1500 m) and N. hurrelliana (above 1500 m), both of which are also epiphytes [REF].