The Cape bugle-lily is restricted to the botanically rich habitat of the Cape Floristic Region where conservation is now a high priority. Substantial areas of this region have previously been lost through urbanisation, and habitat conversion for agriculture and commercial plantations. Around urban areas, the natural fires, upon which fynbos plants are dependant for reproduction, are suppressed, reducing many species’ ability to reproduce, while wetlands may be drained and groundwater extracted (2).
Although relatively restricted in range, dense stands of the Cape bugle-lily remain in some places, and it is currently not considered threatened. However, the subspecies W. b. ardeneri has an extremely limited distribution, and due to continuing threats, it is listed as Vulnerable on the South African Interim Red Data List (7).
In Australia, the Cape bugle-lily is considered an environmental weed, as its ability to reproduce quickly and persist in arid regions, allows it to out-compete native species for nutrients and space. The species is actively eradicated using chemical pesticides, machinery, livestock grazing and by limiting the species dispersal (3).