Pycnanthemum
The mountain mints are summer flowering perennials, from North America. Generally white to cream, small flowers, in clusters, proving attractive to insects. Foliage can be green, glaucous to silver, which extends to bracts surrounding the flowers. The leaves aren't as strong as traditional mints (Mentha sp.), but are still aromatic and can be used in teas and tinctures.
Some of the most important flowering perennials in midsummer, especially attractive to bumblebees, honeybees, hoverflies, wasps and butterflies.