Many countries are known for cultivating specific herbs that are widely used in herbal teas. This is often due to the ideal climate and soil conditions in those regions. Here is a list of some of these countries and the specific herbs they are famous for:

• South Africa: This is the sole source of Rooibos and Honeybush tea. These plants are indigenous to the Cederberg region of the Western Cape.
• Egypt: Known for producing high-quality Chamomile and Hibiscus. The sunny climate of the Nile River Basin is particularly well-suited for these flowers. 
• United States: The Pacific Northwest, particularly Washington state, is a major producer of Peppermint.
• Argentina, Brazil, and Paraguay: These South American countries are the primary source for Yerba Mate, a traditional herbal tea with stimulating properties.
• India: A major producer of a wide variety of herbs and spices used in teas, including Ginger, Cardamom, Turmeric, and Tulsi (Holy Basil), a common ingredient in Ayurvedic medicine.
• Vietnam: Known for its cinnamon, particularly high-concentration cinnamon from the Yen Bai forest.
• Jamaica: A specific type of bitter herb called Cerasse is native to this country and used in tea.
• Ecuador, Peru, and Colombia: These countries in the Amazon rainforest are the source of Guayusa, a caffeinated holly leaf used in tea.
• Europe and Asia: Licorice root is grown throughout these continents and used for its natural sweetness in herbal teas.
• China: While famous for traditional tea, it also has a long history of using various herbs for medicinal infusions.