Purchasing the tree in the middle of summer meant there was little I needed to do besides keep it watered and fertilized. Much to my delight, I kept the tree alive and growing over the hot summer we had last year. When the weather started to turn in late fall, I moved the tree up next to the house where it sat until recently.
Alas, winter in Portland this year seemed to really hang on and we had multiple late February - early March snows, however, the weather did finally seem to turn the second weekend of March and I was more than ready to try my hand at re-potting my bonsai.
Armed with my book knowledge, I started by preparing my new pot, covering the bottom holes with some garden fabric I had already.
Some bonsai trees require very specific soil, in the case of the Chinese Elm, I was able to just use a basic bonsai soil mix.