They make "American Classic Tea" which, frankly, is the best tea you'll ever drink.
Drive the 30 or so miles outside of Charleston and see America's Only Working Tea Plantation. They have free tours and free samples. It's not a bad way to spend a Saturday afternoon.
They'll tell you how the tea is grown, harvested, and dried, and how the tea-tasters have to be certified and with one sip of tea can not only tell you the type of tea leaf used, but where it was grown and in what area! Talk about a sensitive tongue.
This is a nice place. You're in the middle of nowhere. Make a day of it. Bring a sack lunch and some home-made Iced Tea (made with American Classic, of course) and see something that you'll not see anywhere else in this country.
Did I mention it was free?