This may be useful.
I,ve tried this on a Oncidium but after 3 months no progress.I think i,m expecting to much to soon.
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This is a discussion on Backbulbs can be useful! Woo-hoo! *cheers* within the General Orchid Culture forums, part of the Orchid Culture category; BACK BULBS Back bulb propagation is a method of producing a new plant from old ...
This was found on easyorchids.co.uk, and it sounds like a great way to propagate orchids without complicated equipment.BACK BULBS
Back bulb propagation is a method of producing a new plant from old previously flowered or unflowered back pseudobulbs which are usually leafless, plants grown this way may take 2 to 3 years or more to reach flowering size.
Another simple method of propagation but this one may take many years to obtain a flowering size plant. Essentially the process involves the removal of older back bulbs - preferably at re potting time - and placing them under 'ideal' growing conditions to induce rooting.
If you can induce a back bulb to throw out roots then you are half way to obtaining a new plant. It is important to remember though when removing back bulbs that in order to keep the parent plant at flowering size that it, or any divisions should still have at least two good back bulbs and a growth.
Maybe I should try it. (I gotta wait 'til I get some backbulbs though, since all my pbulbs have leaves.)
Any experiences/ideas? Did it work for you?
Wow, great link. Yes, the process definitely works, and, in most cases, you eventually will get a flowering plant out of the deal. I've done this with a lot of Cattleya backbulbs, and the only problem is the time factor. It'll take as long or longer as it would to grow out a seedling: you have to wait the initial however-many months for the growth to start in the first place...
I tried it with an oncidium back bulb, too, but finally gave up. How long does it take, Louis?
Well i gave up on the sphag,n,bag & just put the backbulbs in a small pot with some sphag & put it in the growroom right next to the humidifier.
I really want these to grow as i can,t find another Oncidium the same.
Mums nicked the mother plant(& it,s just respiked).