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Pycnanthemum incanum

hoary mountainmint add to wishlist

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

Height: 2'-4'

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

Pycnanthemum incanum (hoary mountainmint)
  • Pycnanthemum incanum (hoary mountainmint)
  • Pycnanthemum incanum (hoary mountainmint)

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Description

Pycnanthemum incanum

Also known as:

hoary mountainmint

,

silverleaf mountain mint

,

common mountain mint

Scientific Synonyms:

Description

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.

Cultivation

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

Propagation

Easy to propagate from cuttings or division. Seeds are tiny and can be difficult to collect.

Additional Notes

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

Native Range:
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

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Magnoliopsida Dicotyledons
Subclass Asteridae
Order Lamiales
Family Lamiaceae Mint family
Genus Pycnanthemum mountainmint
Species Pycnanthemum incanum hoary mountainmint