North America Native Plant

Southern Mountainmint

Botanical name: Pycnanthemum pycnanthemoides var. viridifolium

USDA symbol: PYPYV

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Pycnanthemum tullium Benth. (PYTU)  âš˜  Pycnanthemum viridifolium (Fernald) E. Grant & Epling (PYVI2)   

Southern Mountainmint: A Fragrant Native Treasure for Your Garden If you’re looking for a native plant that delivers both beauty and function, southern mountainmint might just become your new garden favorite. This delightful perennial herb brings a refreshing minty fragrance to your landscape while serving as a pollinator magnet that’ll ...

Southern Mountainmint: A Fragrant Native Treasure for Your Garden

If you’re looking for a native plant that delivers both beauty and function, southern mountainmint might just become your new garden favorite. This delightful perennial herb brings a refreshing minty fragrance to your landscape while serving as a pollinator magnet that’ll have bees and butterflies lining up at your garden gate.

What Makes Southern Mountainmint Special?

Southern mountainmint (Pycnanthemum pycnanthemoides var. viridifolium) is a true southeastern native that knows how to make friends. This herbaceous perennial produces clusters of tiny white flowers that may look delicate, but pack a serious punch when it comes to attracting beneficial insects. The silvery-green foliage releases a wonderful minty aroma when brushed against – nature’s own aromatherapy session right in your backyard!

As a member of the mint family, this plant has that classic square stem and opposite leaves that herb enthusiasts will recognize. But unlike some of its more aggressive mint cousins, southern mountainmint tends to behave itself better in the garden.

Where Does It Call Home?

This native beauty has deep roots in the American Southeast, naturally occurring across Alabama, Georgia, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia. It’s perfectly adapted to the climate and conditions of these regions, making it an excellent choice for gardeners looking to embrace local ecology.

Why Your Garden (and Local Wildlife) Will Love It

Southern mountainmint is like hosting a dinner party for pollinators. When it blooms from mid to late summer, you’ll witness a parade of bees, butterflies, and other beneficial insects enjoying the nectar-rich flowers. This makes it an invaluable addition to any pollinator garden or naturalistic landscape.

The plant also brings year-round interest with its aromatic foliage and attractive seed heads that persist into winter, providing food for birds and visual appeal during the dormant season.

Perfect Garden Roles

Southern mountainmint fits beautifully into several garden styles:

  • Native plant gardens where it can mingle with other regional favorites
  • Pollinator gardens as a reliable nectar source
  • Herb gardens for its aromatic qualities
  • Naturalistic landscapes and woodland edge plantings
  • Rain gardens and areas with variable moisture

Growing Conditions and Care

One of the best things about southern mountainmint is its easygoing nature. This adaptable perennial thrives in USDA hardiness zones 5-8, making it suitable for most of its native range and beyond.

For optimal growth, provide:

  • Partial shade to full sun exposure
  • Well-drained soil (though it tolerates various soil types)
  • Average moisture – neither too wet nor too dry
  • Space to spread, as it can form colonies through underground rhizomes

Planting and Care Tips

Getting started with southern mountainmint is refreshingly straightforward. Plant it in spring or fall, giving it enough room to establish and spread naturally. Once settled in, this perennial is remarkably low-maintenance.

Here are some care essentials:

  • Water regularly during the first growing season to establish strong roots
  • After establishment, it’s quite drought-tolerant
  • Divide clumps every 3-4 years to prevent overcrowding and maintain vigor
  • Deadhead spent flowers if you prefer a tidier look, though the seed heads have their own charm
  • Cut back to ground level in late winter or early spring

Is Southern Mountainmint Right for Your Garden?

If you’re passionate about supporting native wildlife, love fragrant plants, and appreciate low-maintenance perennials, southern mountainmint deserves a spot in your garden. Its combination of ecological benefits, aromatic appeal, and easy-care nature makes it a winner for both novice and experienced gardeners.

Consider planting it near pathways where you can enjoy the minty fragrance, or group it with other native perennials for a stunning naturalistic display. Your local pollinators will thank you, and you’ll have a reliable, beautiful plant that truly belongs in your regional landscape.

Remember to source your plants from reputable native plant nurseries to ensure you’re getting true southern mountainmint and supporting responsible horticultural practices. Happy gardening!

Southern Mountainmint

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Pycnanthemum Michx. - mountainmint

Species

Pycnanthemum pycnanthemoides (Leavenworth) Fernald - southern mountainmint

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA