I've transplanted Codiaeum a few times over the years and the only trouble I have is the leaves tend to break off quite easily but other than that no problems, new leaves will grow. The only issue you may have is the temperature in your garage during the winter months; Codiaeum thrive on heat and humidity. You can keep the humidity up around the plant by placing it on a tray of moist pebbles, just be sure to keep the pebbles moist at all times; as for heat, Codiaeum don't like temp's to drop below @ 50ºF for very long.
