I’ve been looking at the monstrous mulberry tree in my backyard for a few years now, thinking about buying a dwarf mulberry to develop. this year i found 2 mulberry trees that had very small leaves compared to the full sized one, and they were putting off little mulberries too. there was a 3rd one too, but it wasn’t fruiting and had a weird mixture of leaf shapes. a male i presumed. well, i took some cuttings and what do you know, looks like they’re fruiting already.
That’s incredible - you’ll have to share photos when the fruit matures!