When did you start feeding your baby fruit baby foods?

Mine is 5 month old and is eating the veggie baby good. She eats green beans, squash and peas. Well her ped said don't start the fruit kind until a month after you start the veggie kind. Were you told the same? People have told me to try the prune kind to help constipation but you aren't supposed to do fruits right away. What are talks opinions?