the furry bottoms are a good sign that it’s more rubra than alba from what I have seen. someone posted good photos of the leaves and varieties in the mulberry tree thread
here’s a link to one of the posts with photos
I stumbled upon this thread looking for info on ‘Varaha’ & made an account just to say the last couple “Red Mulberries” members posted are not straight M. rubras.
@manyasfigs25 appears to have a hybrid (with some nice looking fruit!), and @resonanteye seems to have a straight M. alba (could be a complex backcrossed hybrid tho).
Here’s a pic showing the difference, with Red Mulberry leaf on the top, an alba x rubra hybrid I found in the middle, & a characteristic White Mulberry leaf on the bott…
there’s more in that thread too.