Many species of Hoya are popular houseplants, 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. Hoya leaves vary in size, texture, colour and venation. In
size, leaves range from as small as 5 mm in length to as large as 25 cm
by 35 cm. Some Hoya leaves appear to be veinless while others have very
conspicuous veins of a lighter or darker colour. Some leaves are mottled
with speckles of silvery white; others have leaves that are thin and
translucent; some are so thick and succulent that they look more like
crassulas than hoyas. Hoya flowers are all shaped like five pointed
stars. Some species' petals reflex so far that the flowers appear to be
round or ball-like.
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