Plant types and subtypes: Perennials
Light Requirements: sun, part-sun
Water Use: medium
Soil Moisture: dry, moist
Soil Description: average, loam, clay, sand, gravel/rock
Bloom Time: June, July, August
Bloom Color: white, pink
Leaf Color: green, gray-green
Hardiness Zone: 5, 6, 7, 8
Additional Tags: attracts bees, attracts butterflies, clumping, deer resistant, edible, fragrant plant
Pricing & Availability
Pycnanthemum incanumAlso known as:
silverleaf mountain mint,
common mountain mint
Pycnanthemum incanum is a clump-forming mint, with rigid green and reddish stems, that grows to a height of 4 feet. The leaves are broad-ovate, up to 3" long, hoary beneath (hence the common name), and are distinctly white below the flowers. It produces dense terminal clusters of white flowers, spotted with pink, that are up to 1 1/2" across. All parts of the plant emit a strong mint fragrance when rubbed or crushed.
Easy to grow under typical garden conditions, it prefers full to part-sun, and moist to slightly dry soil. A good choice to naturalize large areas in combination with other wildflowers, or as a dense border planting. It readily spreads in open areas with little competition, and might be too large and aggressive for a small garden if not kept in check. The blooming period lasts over a month, beginning mid-summer. Zones 5-8
Easy to propagate from cuttings or division. Seeds are tiny and can be difficult to collect.
The species is divided into two subordinate taxa: Pycnanthemum incanum var. incanum in the north, and Pycnanthemum incanum var. puberulum in the south.
Native Range & Classification
Recorded County Distribution: USDA data
AL, CT, DC, DE, FL, GA, IL, IN, KY, MA, MD, MI, MS, NC, NH, NJ, NY, OH, PA, RI, SC, TN, VA, VT
USDA Endangered Status:
- Endangered: NH, VT
|Species||Pycnanthemum incanum||hoary mountainmint|