Ray wrote:
I don't know how well it applies to dendrobiums, but I usually try to adjust
the size of the pot to the size of the root ball, rather than immediately
trimming the roots to fit a pot that looks appropriate for the plant.

Root trimming might still be required - and often is a bit of a "kick start"
to get the roots to branch - bit if the as-is roots are just about right for
a 6" pot, I might do minimal trimming to fit a 5", even if the plant might
seem to be more appropriate for a 4"-er.



And wetting the existing roots for 20 minutes or so allows them to get
pliable and more likely to wind without damage into a pot of suitable
size. That said you still may have to cut. In any case this is a challenge!

K Barrett