What is the right age to introduce wheat into a child's diet?

My son is almost 7 months old and I gave my son toasted bread and spread some pureed fruits like apple, blueberries and most recently dragon fruit and he loves it. I don't have any family history of anyone having allergic reactions to wheat so that was the reason why I gave him at 6+ months. Otherwise, if you have family members who are allergic, you can wait until your baby is 12 months old onwards instead. http://babyparenting.about.com/od/startingsolids/f/startingwheat.htm