@fapopo, no I don't trim the roots or repot except when I could tell roots are clogging the hole of the pots and cannot drain. But maybe I should. I have 50+ of these in pots and some in the ground. Some are mini-trees. Plus I have adeniums too. I like the adeniums because they are compact.
My hubby gave this to me for Mother's Day and I had this for 7 years and has remained less than 2 feet in the pot. I don't repot my plants except this time, I repotted this spring to a bigger pot and rewarded me with blooms. But maybe I need to repot some to get rewarded with blooms.