Herbal teas are usually caffeine free. You can always check the label, it usually says if the tea if caffeine free. If the package says anything about black or green tea then it has caffeine in it. If it's labeled as herbal tea then it has no caffeine.
Unless it says no-caffeine on the box, teas that are black, green, oolong, etc will most likely contain small amounts of caffeine. White tea contains little to no caffeine.
All the teas that they sell in out grocery store are caffeine-free. I also use these teas to make flavored ice tea. The fruity flavors add a great taste.