The first volley of return fire in what could become an all-out trade war between the U.S. and China struck close to home on Friday.

The day after President Donald Trump announced he was imposing a $50 billion tariff on Chinese-made steel and aluminum, China announced its plans to retaliate by imposing a two-stage tariff on American goods. The first phase involves a 15 percent import tax on agricultural and botanical goods, including wine, almonds, fresh fruit - and ginseng.

While the president may not know a lot about ginseng's role as an American export good, the Chinese do, since they've been buying and savoring wild Appalachian ginseng for more than 300 years.