sorry its taken so long to reply.BURRY !@*#&@^#$ ISP's .

I wouls be reducing the watering so that the kingianum was dry for about 2 weeks and moist about 1 day.As for the speciosum I would be leaving dry for the next 2-3 months or untill flower buds are defined .

As I have stated in thread
http://www.rv-orchidworks.com/orchid...ead.php?t=5475

Culture

Dendrobium Kingianum Is considered the easiest of the Austrailian Dendrobs to grow and flower. It can be grown just about any way that you like, on a slab, in a pot, in the shade, in full sun in a prepared garden beds, rockeries etc. provided some simple rules are followed. These rules are :-
It does not like to be over potted , or have wet feet(roots) , plenty of air movement and a medium to high humidity. These items are all found in its natural environment. The potting of the plants should only provide
enough room for one to two years growth and it is in a open mix with excellent drainage. Repot immediately after flowering because that is when the new growth is starting. Feed and water well while growing and then just enough water to stop the canes from shrivelling for the rest of the time. Minimum winter temps of 2degrees C are tolerated .Generally if the leaves have a slight purple tinge to them they are getting the right amount of light.

speciosum

Culture
Well that was a rundown on the varieties now we will consider the culture.
It is an ideal plant for well drained rockeries, preferring to be the top most plant. It also grows well in the forks of large trees or on the top of sizeable tree stumps. In these positions it likes lots of light, Full sun will not hurt it. If it is grown in a pot ,it should be put into a very very open mix. As growth is very robust, it will require frequent repotting.Do not start a small plant in a pot that is big. The best time to repot is just after flowering has finished. A second growth faze can occur in autumn and they will still mature before winter.
The minimum temperature for the southern forms is about 2degess C ,while the lower elevation ones from Queensland would like a temperature if 10C. The varieties Grandiflorum and Hillii like more shade than the others.It can take up to 12 years for one of these plants to mature to flowering size and will alternate flowering and growing years (some years it will only produce growth and the next year it will grow and flower). Water and feed the plants regularly over summer and allowed to dry off over autumn to help induce the flower spikes.


Hope this helps