They say 6mo you can but it's really unneccessary and the longer you hold off the better. We waited until 15mo with Hayden. But you can do anything that is 100% juice, apple and white grape are great ones to start with. we were told no orange juice until atleast 12mo because they also aren't supposed to have citrus fruits before then because of the high instance of allergies and it's so acidic it can really upset their tummies and give them diarrhea. Also be sure to water it down, we started about 90% water 10% juice...now most of the time it's close to 50/50