I do not think tea is part of that list, but you can make a quick inquiry.That mostly only includes seeds, live plants, and fruit, since it can carry bugs. But a lot should depend on the packaging. If you are buying loose leaf tea and wrap it in saran wrap, it might be a harder sell if anyone calls you on it. But if they are in plastic bags, inside branded cardboard boxes, it will be a lot easier. Just make sure to put it in your checked luggage, sine they investigate that less than carry-ons.