Can dwarf bananas revert to the tall variety? It seems to have happened with a backyard banana patch I help to look after.
When my friend bought the house four years ago it had a well-cared-for circle of Dwarf Ducasse but he allowed it to escape at one side so that it is now a Q with a very long tail. The plants in that tail are all much taller and trunks are not quite so fat, but the fruit are still Ducasse.
Every plant in the tail is tall. There are no in-between plants, and the suckers can be distinguished when they are only knee-high. Dwarf suckers have fatter trunks and more leaves (and the leaves turn out more) than the ‘tall’ suckers.