Other than great fortune propagating a broken cane from an unknown (but large) dendrobium. I am very inexperienced with dendrobiums. I did buy a gigantic book called 'The Dendrobiums' Which does give a lot of info on the species.
Here is some food for thought.
1) There are 40 sections (types) of dendrobiums.
2) Each section comes from a different region, with different climates.
3) Some sections require cool winters, warm winters, wet winters, dry winters, and a few other combinations.
4) try and determine the heritage (parents) of your hybrid, then try to determine what sections they came from. If they came from different sections with very different requirements, try going down the middle of both requirements.
If you subscribe to American Orchid Society. This month's issue has about 8 dendrobium sections defined, with some of the more popular species in those sections. You might get some more info there.
Good luck
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