Rob Cantley, a prominent conservationist and artificial propagator of Nepenthes plants, assesses the current status of plants in the wild as follows:[REF] This species grows in at least 2 distinct sub-populations, both of which are well protected by Sabah National Parks Authority.
This being the case, however, it appears that the genetic variability of cultivated N. rajah plants is very small, as all commercially available tissue-cultured plants are thought to belong to just four clones originating from the Royal Botanic Gardens, Kew in London, England.