Hairy/Whorled Mountain Mint

(Pycnanthemum verticillatum)

Pycnanthemum verticillatum, commonly known as Hairy or Whorled Mountain Mint, is a native perennial wildflower found in open woods, prairies, and meadows across central and eastern North America.  This upright, clump-forming member of the mint family (Lamiaceae) is known for its narrow, lance-shaped leaves arranged in whorls around square stems and its dense, rounded clusters of tiny white to pale lavender flowers, often dotted with purple, that bloom from mid- to late summer.  Although flowers are small, they are highly attractive to a wide variety of pollinators, including bees, butterflies, moths, and beneficial wasps.  In fact, Pycnanthemum species are considered among the best native plants for pollinator support in North American landscapes.

Whorled Mountain Mint thrives in full sun to light shade and prefers average to dry, well-drained soils, including sandy or rocky substrates.  It is well adapted to prairie, meadow, and xeric garden settings, making it a top choice for low-maintenance, ecologically focused plantings.  The plant typically grows 2-3 feet tall and slowly expands by short rhizomes, forming well-behaved colonies without becoming aggressive like some other mints.  Its minty-aromatic foliage adds sensory appeal and deer resistance, making it even more garden-friendly.

Care is minimal.  Deadheading is not necessary unless a neater appearance is desired, and the plant can be cut back in late fall or early spring to refresh growth.  It is remarkably drought-tolerant once established, resistant to pests and diseases, and seldom browsed by deer or rabbits.  It can be propagated easily by seed, division, or cuttings, and its tidy growth habit makes it a great choice for native borders, pollinator strips, restoration projects, or naturalistic plantings.  It combines beautifully with other sun-loving natives like coneflowers, milkweeds, goldenrods, and Little Bluestem.

With its elegant form, fragrant foliage, exceptional ecological value, and adaptability, this mountain mint is an outstanding and underused plant for gardeners seeking to support native biodiversity while maintaining a refined, easy-care landscape.