I guess this is as good a place to put this as any...
I have problems with my beautiful Ensete Superbum. I got this as a small seedling last summer, planted it in new bagged soil, and as it grew, it showed this problem later on last year. I cut some leaves off last year to see if there was something in the plants vascular system. The cuts were clean with no dead/black areas/tubes inside the plant. At the end of the year, I took the plant into my unheated garage for the winter. As the winter drew on, the plant declined and the leaves died back one by one. At this point I wrote it off.
It looked like it died completely during the winter, and I thought the leaf problem was the cause. When I went to put the plants out this spring, I just ignored the Ensete and left it in my garage. I did not water it at all from October to May. My Mom was visiting and saw 2 small leaves that had come up. I pulled it out, and watered it, and it grew a few more leaves, and now is exhibiting the same funky edging of what looks like black death around the leaf perimiter and projecting inward toward the midrib following the veins. I have stopped watering in case it is water related. It seems to slow it down some, but then it also slows down the leaf/plant growth too.
Can someone tell me what is going on, and the best way to treat it? I don't even want to get it close to my other bananas for fear they'll catch it. This is the only banana that is showing this problem.
I recieved 2 plants from the same person, both grown from seed, and the other (Cheesmanii) is not showing any signs of this and is healthy. Thanks in advance for the help. Any and all help is mucho bueno. Please help me save my Ensete Superbum!