I air-layer the three ficus that I grow, Fiddle Leaf, Banana Leaf, and Rubber Tree. I mainly do this to control their size. I moved one of those air-layered Banana Leaf Ficus into the solarium. It is only about 3' tall but it'll do nicely. I put it on a 30" stand. My wife and I enjoy watching these small trees grow big and strong. In the fall, I will have to bring my 25 yr. old "Mother" Fiddle Leaf Ficus inside, so she'll have a prominent place in the solarium during the fall and winter months. She will be 7- tall. I will also bring in a handful of blooming plumeria trees. I found that I could keep those plumeria blooming through Christmas before they took a break and went dormant for 4-8 weeks. Before the solarium was built, keeping plumeria in bloom in the fall and winter months was literally impossible.
I never am short of plants.