Remarks on the successful culture of Dendrobium cuthbertsonii
All orchids are jewels of nature - Dendrobium cuthbertsonii is
the diamond among them !
Here I want to present some experiences I collected over
the years ...
A much more substantial discussion of the culture-parameters can be reviewed
(in German) on www.orchideenforum.de/
Which Relative Humidity do they need ?
during the day at least
60%, during the night some 85% - 90%.
D. cuthbertsonii are to be kept cold to cold-temperate,
as they come from the mountain areas of Papua New Guinea at 2500m - 3000m elevation. There
are rainfalls the whole year over and fog is blowing through the mountain ranges. Temperatures
range from 8°C to 28°C which might pose a problem during summertime. Higher temperatures
are tolerated for a short while - drying out never ! Ideal temperatures would be 20°C
during the day and 13°C during the night.
How often should they be watered !
September to February a daily
dunking is enough.
Beginning with March an automatic misting/fogging system is needed
to thoroughly wet the plants twice a day. On particularly warm days (July - August) additional
dunking is necessary.
Clean and soft water (rainwater or reverse osmosis water with 50 µS)
is a must for successful culture of this species. Every second week some feeding with 100
µS should take place - and every time care with salt accumulation.
the salt content of the water a successful culture is impossible !!!
The picture at the right shows a gallery of D. cuthbertsonii
which are fogged regularly by means of a "tropic" - they are always
the champions at the regular meetings of the Carinthian Group of the Austrian Orchid Society.
Photos copyright © Ernst Ritzer
/ Carinthia - Austria