Angraecum orchids and their relatives are amongst the most unusual and spectacular flowers in the world. Coming from Madagascar, Africa and adjacent islands, they are now grown world-wide. It was an Angraecum orchid which led Charles Darwin to surmise a moth existed with a 30cm tongue to reach the nectar at the base of the long spur of the orchid flower. It was several decades later that such a moth was finally identified.
While generally available only through the specialist orchid nurseries, the popularity of these orchid plants is rising. Some are large, pristine glistening white to green, while others are small gems. The flowers of some of these orchids are non-resupinate, which means they appear upside down compared to what we normally see.
Do not be put off by the thought of tropical rainforest orchids growing in our temperate Sydney climate. The majority of the commonly grown Angraecum orchids tolerate our temperate climate well and flower freely. They are epiphytes, living on trees, where they have good air movement and completely free drainage of their roots. These are the conditions needed to successfully grow them.
A few are almost desert dwellers while others need constant moisture, though these are less commonly available. Generally, they need at least moderate light but need protection from harsh afternoon summer sun.
A medium to large bark orchid mix, replaced before it breaks down, is ideal. The plants may also be grown mounted provided they receive sufficient moisture. Plants in such conditions will dry much more rapidly. Do not be concerned about roots trailing out the bottom of the pot; this is a sign of good growing conditions.
Regular weak fertiliser is required during active growth with watering every few days in warmer weather. In our Winter the plant’s growth rate slows. They should have a rest and be kept relatively dry for several months until regrowth begins again. It is recommended to begin with hybrid plants rather than species as they are easier to grow and flower.
The Eastern Suburbs Orchid Society has an orchid show on the third Monday of every month meeting on the 3rd Monday of every month commencing at 7.00 pm at the Kensington Park Community Centre in Hall 1, 1 Day Ln, Kensington NSW 2033. Visitors are always welcome.