The name Acidanthera is of Greek origin, akidos and
anthera . These bulbous perennials belong to the Iridaceae family.
Although they are of the easiest cultivation, they are not commonly grown or
even widely known. They were introduced into Europe from their native Abyssinia
in the late fourteenth century. The leaves are iris-like; the flowers are
pendulous, white and pinkish, with central markings that vary from yellow to
red. Each flower stem bears numerous blooms. Throughout the tropics there are
about twenty- five species, but in gardens usually only the species A. bicolor
is cultivated.
Cultivation. If we refrain from the temptation to raise the
bulbs from seed a long and tedious
procedure—the cultivation of acidantheras is very easy. The corms can be
planted permanently in spring—in all but the coldest zones—and left undisturbed
until time to divide and replant the corms. In districts where winter cold is
severe and the soil freezes in depth, the corms should be treated like
gladioli, that is, planted in late spring and then removed from the soil after
the late-autumn flowering period, dried, stored, and replanted the following
spring.
Flowering is late, July–October. The most suitable soil is one that is
well-drained, heavy, and fibrous. A generous water supply is necessary during
the growing period, but less is required when the flowering stage has been
reached. The most effective results are obtained by planting in large groups.
Acidantheras love the sun, but in very hot sunny districts they will also give
good results in half-shade. They cannot be recommended for cultivation in pots
or on terraces because their root system is quite extensive. The flowers
generally have a slight but agreeable fragrance although this is not always
apparent and they are excellent subjects for cutting.
Acidanthera bicolor Hochst.
This is the only species sold commercially. Flowers are pure
white with a purple mark inside at the base of each petal. At dusk the flowers
often appear to be luminous.
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