General Plant Information (Edit)
Plant Habit: Herb/Forb
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 3-6 feet
Plant Spread: 3-4 feet
Leaves: Unusual foliage color
Other: Known for the whitish to silvery color of the upper leaves and bracts around the flower clusters.
Flowers: Showy
Flower Color: Bi-Color: white, purple
Bloom Size: Under 1"
Flower Time: Summer
Underground structures: Rhizome
Uses: Erosion control
Guardian plant
Culinary Herb
Medicinal Herb
Will Naturalize
Wildlife Attractant: Bees
Propagation: Seeds: Suitable for wintersowing
Sow in situ
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Pollinators: Various insects

Common names
  • Hoary Mountain Mint
  • Mountain Mint
  • Hoary Mountainmint
  • White Horsemint
  • Hillside Mint
  • Silverleaf Mountain Mint

Photo Gallery
Location: Opp, AL
Date: 2015-08-18
Location: Mississippi
Date: 2013-08-09
Location: Opp, AL
Date: 2015-08-18
Location: IL
Date: 2016-09-19
Location: Northeastern, Texas
Date: August, 2010
The fresh or dried leaves make a refreshing and medicinal tea.

Date: 2013-10-08

Date: 2013-09-11

Date: 2013-10-01
Location: Mississippi
Date: 2013-08-09
Location: Northeastern, Texas
Date: August, 2010
The small white flowers are white with purple spots.
Location: Brownstown Pennsylvania
Date: 2016-06-18
  • Posted by sallyg (central Maryland - Zone 7b) on Jul 14, 2020 7:36 PM concerning plant:
    We planted a number of these last year at the library where I work, mostly full sun. They've grown very well with little special attention. Now they are covered in blooms, and bringing in lots of different bees and wasps. Great choice for native garden in Mid Atlantic area.
  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Jan 15, 2012 6:47 AM concerning plant:
    If you've driven on a country road and noticed plants that look like their tops have been spray-painted, chances are it's this plant. Upright stems usually 2 to 4 feet tall are topped with hemispherical flower heads with the same configuration as Bee Balm. Flowers are in dense clusters of white suffused with green and pale pink spots. The white coloring extends down from the flowers including stems and leaves for 6 to 12 inches. Plants really do look like they've been painted. Hillside/Mountain Mint will grow in full sun or light shade. It takes dry or moist conditions and grows locally here in Tennessee on chert and red clay banks. Its leaves and stems are also extremely aromatic. Just watering plants in pots will fill a greenhouse with a fresh herbal-mint fragrance. With its white upper parts on display for the latter third of the growing season, this plant is something a bit unusual for the woods' edge or border of a natural area. (Sunlight Gardens)

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