Those who wish to give their children blueberries will want to wait until they are at least six months old. This is important because otherwise the baby could choke on the berries and have problems with them. Blueberries are certainly nutritious and offer a lot of the vitamins and minerals which are essential for a healthy body.
Those who want to introduce their children to blueberries will need to wait until they are at least six months old though, because otherwise these fruits pose a choking hazard which is a risk you will not want to take. After they hit six months, you can feel free to give them just about any kind of berries you want.