Question: Is there any way to keep a mulberry from fruiting? We have red stains all over our patio every spring, plus the flies are everywhere!

Answer: You can’t change it. Fruitless mulberries are a different type, selected and propagated for their non-fruiting nature. For the record, the fruiting types are arguably superior trees, with better growth habit and longer life spans. If you can clean up after them those few messy days each year, and if you don’t mind pulling their seedlings, they can be good neighbors otherwise.