It looks as if i might have hit the stalk pretty good with my wand when watering. It looks kinda rotten/mildewy patch where it must have gotten hit. This morning i found ants crawling on it. Is there anything i can rub it down with? and would i have to do it daily? Rubbing alcohol maybe? Or dish soap? Its one of the better looking plants in the garden, just kinda worried is all. Or maybe tape it? idk Thanks