A few weeks ago I pulled a plant and replaced it because the stem looked like it had rotted. I was overwatering at the time so thought maybe that was why. I just noticed tonight that another plant looks good but stunted compared to the others checked out the stem and sure enough half the stem is brown at he crown. We have had a ton of rain, it has rained for a week straight with no sun. Not sure if its a disease? Any ideas of what disease it could be? Any help much appreciated!