The Dieramas are normally available are quite hardy, though may suffer from hard frosts in the first few years of life. One established
into clumps, they become more hardy - as with many other plants.
Dierama pulcherrimum -
The Wandflower or Angel's Fishing Rod
The Dierama is an evergreen clump-forming perennial, which sends up
its long arching flower wands in mid summer. It always attracts
attention - swaying gently in the breeze.
Unusual
for most of the subjects in this bulb section, the Dierama is evergreen
and has no dormancy period to speak of, so need not (should not) be
lifted in the autumn months for storage.
The long arching flower stems - sometimes to 1 metre in height - will
benefit from the protection in a sheltered site, and preferably in full
sun or at least a very light place.
They normally grow in the wild in areas of moist grassland or even
slight boggy areas. In cultivation within gardens, a moist soil is
preferable, though they are happy in dry areas if well watered during
spring and summer. The pendant flower are best seen when planted in
isolation - rather than in the midst of a herbaceous border.
There is no need to left them in the autumn, and to do so would cause
the plants considerable stress - being evergreens and therefore better
transplanted if needed in the early growing period of Spring.