bonsaiboy wrote:First of all, IÃ¢â‚¬â„¢d like to point out that subtropical trees do not do well indoors.
Depends on the species, some do well and some don't. Florida, for point of reference, is sub-tropical, and many indigenous plants from regions like that will do very well indoors. But true, the "classic" bonsai "sub-tropicals", like olives, pistachio, and pomagranate, do better with cold rooms in the winter. So do most citrus, BTW.
On the Chinese Elm, well, a lot depends. I have a 60+ foot, old Chinese Elm growing on my property in New York. But the species has a fairly broad range in the wild and does exist in sub-tropical environments where it is an evergreen. Good luck finding one that you can verify comes from this type of environment, though. If you DO find one, let me know where since they are supposed to do very well indoors.
Just a word on the Bahama Berry (Nashia inaguensis), I've tried them a few times now. Each time, they've slowing dried up. This species requires a higher humidity, IME, than most other trees. IOW, a greenhouse-like environment similar to what Bloodwoods and other high humidity trees require.