Hi. I've had this banana plant for almost two years. It seems to be doing great during summers, but during our very dark winters it's doing very poorly. My question is, does the corm need to be buried in the potting soil, so roots may grow out of it, or not and if buried it would cause rot? Maybe it's doing poorly because the corm is exposed?
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Right now that brown part is about 5 inches above the ground where the leaves were attached to the corm, but died and dried off.