The greater mountain carnation is threatened by the encroachment of urban development and alien plant infestation (6). Urban development currently covers 1.6 percent of the Cape Floristic Region (7), and with the vast city of Cape Town lying almost at the centre of the greater mountain carnation’s range, any expansion could have a significant impact on this species. Worryingly, Cape Town’s population is expected to double by the year 2025 (8). Alien trees and shrubs, (introduced to supplement the few tree species that occur within the Cape), have spread and invaded vast areas of the region. These alien species alter the delicate balance of the natural habitat, to the detriment of many native plant species (8).