I have had differing results with nanners forming. Sometimes there are only a few nanners with few (if any) seeds, other times no nanners at all. When the grow room temperature gets at or above 85° F for several days, or the lights get interrupted for a couple of hours, it's like a fruit stand! (LOL) Nanners everywhere! I have read of other plants that when stressed can either self-fertilize or try to put on fruit in order to propagate the plant. So far, it has not been a problem for me because when seeds have been produced (from nanners), the seeds have all turned out to be female and produce buds.