I was gifted a tree from an art fair Bonsai shop over the summer . It ' s a Dwarf Jade with a thin trunk and a weak root system from its previous pot . I replanted the tree into a 5050 mix of pearlite and potting soil in a terra cotta pot like any other succulent , and since then it seems to be doing better . The roots have grown stronger and the tree has grown more leaves and branches . I am debating weather or not to prune the tree now or wait until the spring when I can send it outside again . When I prune the tree , I want to focus on making the trunk wider , which would involve removing a good deal of the branches , hence my worry about inside winter light being enough to sustain the tree . Of course , another option is that I just need to let this thing grow for a while before touching it . Either way , I don ' t know and would appreciate guidance . Link to pictures of the bonsai , trunk is . 5 dia for reference