North America Native Plant

Loomis’ Mountainmint

Botanical name: Pycnanthemum loomisii

USDA symbol: PYLO

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Pycnanthemum incanum (L.) Michx. var. loomisii (Nutt.) Fernald (PYINL)   

Discover Loomis’ Mountainmint: A Native Gem for Your Garden If you’re looking to add a touch of wild beauty to your garden while supporting local wildlife, Loomis’ mountainmint (Pycnanthemum loomisii) might just be the perfect addition you never knew you needed. This delightful native perennial brings both charm and ecological ...

Discover Loomis’ Mountainmint: A Native Gem for Your Garden

If you’re looking to add a touch of wild beauty to your garden while supporting local wildlife, Loomis’ mountainmint (Pycnanthemum loomisii) might just be the perfect addition you never knew you needed. This delightful native perennial brings both charm and ecological value to any landscape, and it’s surprisingly easy to grow once you know its secrets.

What Makes Loomis’ Mountainmint Special?

Loomis’ mountainmint is a true American native, naturally occurring across the southeastern United States. You’ll find this hardy perennial growing wild in Alabama, Delaware, Florida, Georgia, Illinois, Kentucky, New Jersey, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia. As a native plant, it’s perfectly adapted to local growing conditions and plays an important role in supporting regional ecosystems.

This charming forb (that’s garden-speak for a non-woody perennial plant) grows as a clumping perennial that comes back year after year. Unlike shrubs or trees, it lacks significant woody tissue, making it a perfect companion for other herbaceous plants in your garden beds.

Garden Appeal and Design Potential

Don’t let its modest appearance fool you – Loomis’ mountainmint packs a visual punch when it blooms. The plant produces clusters of small, white to pale pink flowers that create a cloud-like effect in summer gardens. These dense, rounded flower heads sit atop aromatic foliage that releases a pleasant minty fragrance when brushed against or crushed.

In garden design, this mountainmint works wonderfully in:

  • Native plant gardens where it can mingle with other indigenous species
  • Pollinator gardens where it serves as a magnet for beneficial insects
  • Naturalized meadow areas where it can spread and create drifts
  • Cottage gardens where its informal charm adds texture and movement

A Pollinator’s Paradise

Here’s where Loomis’ mountainmint really shines – it’s absolutely beloved by pollinators! Bees, butterflies, and other beneficial insects flock to its nectar-rich flowers throughout the blooming season. If you’re trying to create a pollinator-friendly garden, this native mint should definitely be on your plant list. It’s one of those wonderful plants that proves you don’t need exotic species to create a buzzing, vibrant garden ecosystem.

Growing Loomis’ Mountainmint Successfully

The best news about Loomis’ mountainmint? It’s refreshingly low-maintenance once established. This adaptable native thrives in USDA hardiness zones 5 through 9, making it suitable for a wide range of climates across its native range and beyond.

Ideal Growing Conditions

Loomis’ mountainmint is fairly easygoing about its growing conditions, but like most plants, it has its preferences:

  • Sunlight: Full sun to partial shade – it’s quite flexible
  • Soil: Well-drained soils are essential; it doesn’t like wet feet
  • Water: Drought tolerant once established, making it perfect for low-water gardens
  • Soil type: Adapts to various soil types but prefers average, well-draining conditions

Planting and Care Tips

Getting started with Loomis’ mountainmint is straightforward. Plant it in spring after the last frost, giving each plant enough space to spread naturally. This species tends to spread by underground rhizomes, so consider this when planning your garden layout – it’s a gentle spreader rather than an aggressive one.

Once established, your mountainmint will require minimal care. It’s naturally drought tolerant, so you won’t need to fuss with frequent watering. In fact, too much water can be more harmful than too little. The plant may also self-seed modestly, giving you new plants to enjoy or share with fellow gardeners.

Why Choose This Native Beauty?

In a world full of garden choices, Loomis’ mountainmint offers something special: the satisfaction of growing a plant that truly belongs in your local ecosystem. It connects your garden to the natural heritage of your region while providing tangible benefits to wildlife. Plus, its low-maintenance nature means you can enjoy its beauty without constant gardening chores.

Whether you’re a seasoned native plant enthusiast or just beginning to explore indigenous gardening, Loomis’ mountainmint offers an accessible entry point into the rewarding world of native plant cultivation. Your local pollinators will thank you, and you’ll have the pleasure of watching this charming native thrive in your very own garden.

Loomis’ 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 loomisii Nutt. - Loomis' mountainmint

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