Hello, we came over to 2014 with an idea of putting my humidity loving begonia (above picture) into a glass ball bowl terrarium, looked so pretty! We'll on inspection, it is rotted from the mid stems, I did not water it from the time I planted it but it probably was to damp. I could not save the remaining rhizomes. I tried drying them off, I believe that I planted the rhizomes under the potting soil. Maybe that was the problem, I should have waited for roots to start up before placing the rhizomes that close to tip growth into the media.