Cultivation and Uses
Many species of Hoya are popular houseplants in temperate areas (especially H. carnosa), grown for their attractive foliage and strongly scented flowers. Numerous cultivars have been selected for different leaf forms or flower colours. Hoyas grow well indoors, preferring bright light, but will tolerate fairly low light levels, although they may not flower without bright light. Hoyas commonly sold in nurseries as houseplants include cultivars of H. carnosa (Krimson Queen, Hindu Rope − compacta), H. pubicalyx (often mislabelled as H. carnosa or H. purpurea-fusca), and H. kerrii. Hoyas are easy to propagate, and are commonly sold as cuttings, either rooted or unrooted, or as a potted plant.
Hoya carnosa has been shown in recent studies at the University of Georgia to be an excellent remover of pollutants in the indoor environment.
Various cultures have used Hoyas medicinally, especially Polynesian cultures. Some are toxic to livestock and sheep poisonings in Australia are reported.
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Hoya carnosa
as a houseplant -
Hoya carnosa
Inflorescence peduncle, several years old -
Hoya carnosa
Inflorescence -
Hoya carnosa
Single flower -
Hoya obovata
Ant feeding on nectar. Flowers are very fragile.
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