Baby food!

At what age do baby's need to eat baby food.? My son seems to not be taking to it very well. But he is only 4 months .Do I need to be worried about this?

    6 months +.... Before 1 it's just for fun:) so they really don't even need it but people introduce around 6mos!
    About Tiffany Harmon
    Current: Bullhead City, Arizona
    Birth: May 24
    On since: Jan 3, 2014
    I am a christian stay at home mom. My husband and I have been married for almost 3 years now. And on 11/07/2013 we had are first baby.