Here are a few of the most garden-worthy ones. Hoary mountain mint (Pycnanthemum incanum) is native from Indiana to the eastern U.S. and has silver-greenish leaves that produce light purple flowers.

Native to the eastern U.S. and Canada, mountain mint (Pycnanthemum muticum) is part of the mint family (Lamiaceae) but isn't a true mint itself. Here’s everything you need to know about growing ...