Traditional Medicinals Organic Throat Coat Herbal Tea Bags, 16 Ct. The slippery elm tree has played an important role in Native American herbal medicine for hundreds of years. Inspired by its traditional use, we source our slippery elm domestically, where families collect the bark sustainably by hand to protect the trees for future generations. From field to cup, we make sure our teas deliver the benefits of these amazing plants. To deliver consistently high-quality teas, we source organically farmed or organically wild-collected herbs from ethical trading partnerships, seeking out medicinal-grade plants. Only a small fraction of the world?s herb supply meets our high-quality standards.