Hello and welcome,
Nice little collection. The Chinese Elm will do best outdoors, so come spring place it outside and leave it out there 24/7/365. Be sure to give it as much light as possible since it isn't technically an indoor tree.
i was told not to put it outside durring the winter. New England Bonsai keeps them in there tropical greenhouse.
Where are you located? Please fill out your profile so that we know. Chinese Elms can take some pretty low temperatures...
Welcome. Do you have any outdoor trees? just curious. Not that you need to (there are some folks who enjoy the hobby as primarily an inside thing), but getting your trees to thrive indoors can take some extra work. Keeping plants that naturally thrive out in your backyard can make some of the horticultural parts of developing little trees in pots easier.
Have fun (and don't overwater those portulacarias)![]()
Could this also be considered a bonsai?
Only in the absolute loosest use of the word (plant in a pot). Did you get that to fruit inside? Or did you order it like that?
As for the wisteria - I don't know if they'd be okay in the attic. I don't have any experience with plants in your climate. What's the reasoning behind putting them there rather than somewhere more accessible, or just leaving them outside?