Uhh for reliable fruting i guess. Just, look here it will anser your questions http://www.crfg.org/pubs/ff/mulberry.html[b said:Quote[/b] ]You need both male and female trees if you wish to get fruit.
[b said:Quote[/b] ]The tree is not grown on a commercial scale because the fruit is too soft and easily damaged to allow it to be transported to market, and is therefore best eaten straight from the tree