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Growing Dendrobium speciosum
November, 19, 2017

( Photo courtesy of RBG Sydney )

Notes and tips on the culture of this Australian Native Orchid   

By O.Sengstock.



Culture of this orchid is same as any other orchids, it is always a balance between lighting, watering, potting
mixes etc.
There are 9 varieties of speciosum:
Var. speciosum – from the NSW – Vic border to Buladelah in NSW.
Var. Hillii – from Buladelah NSW to Mt Mee Qld – ranging westwards to around Girraween, with some
isolated colonies.
Var. Grandiflorum – further west from about Conondale Range / Mt Mee area to Mt Morgan near
Rockhampton – integrades with Var hillii at the southern limit of range.
Var. Capricornicum – located on the volcanic plugs surrounding Rockhampton and Byfield region.
Var. Blackdownense – localized on the Blackdown tableland.
Var. Carnarvonense – Carnarvon gorge.
Var. curvicaule – surrounding the Mackay region, sea level to highest areas of the great dividing range.
Var. Boreale – Townsville to Cairns at altitude.
Var. Pendunculatum– Atherton tableland west of Var Boreale on the dry west facing slopes.


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John Oxley District Orchid Society
Top Tip: Cost effective temperature control
April, 12, 2017

Cost Effective Temperature Control and the Diurnal Dilemma

Text and photos by Richard Mollee

Flowering orchids can now be easily purchased at any time of the year. However, re-blooming these orchids is often significantly more challenging. Commercial growers commonly use artificial cooling to induce flowering in orchids outside of their typical blooming season. Such artificially controlled conditions are not usually available to most hobbyists, prohibited in large part due to high initial set up, and ongoing running costs. Fortunately, good culture is easily achievable without costly artificial heating or cooling if planned for appropriately. Most affordable temperature control techniques are centred upon the concept of insulation, slowing the absorption of heat to remain cooler, or minimising the loss of heat to remain warm. Each grower needs to determine which technique is best for their collection, as well as the scale that is necessary.


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