I planted one black Mulberry and never got fruit then the birds planted two right next to each other and I found out one male and one was female the female bears fruit every year the mail just flowers and pollinates it they are black and the birds love them and plant them for us we enjoyed them. Everyone has purple souls on their feet when the season is ripe!
btw we ended up digging our kitchen grey water system to lead to near the roots of said Mulberries and they love it!
