honestly the only thing i heard about a banana was for indoor grows, maybe outdoors, i dont know???.. but if you put a banana peel or a couple peels next to your plant during harvest time it will ripen them faster because of the ingredient in the peel, it gives off a gas, that is said to ripen the buds faster, i forgot what it was called?? anybody??. and that was from a site that is long gone..I think this is the first serious answer in your question lol