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Pycnanthemum flexuosum

Appalachian mountainmint add to wishlist

Plant types and subtypes: Perennials

Light Requirements: sun, part-sun

Water Use: low

Soil Moisture: dry, moist, wet

Soil Description: average, clay, sand

Height: 2'-3'

Bloom Time: July, August, September

Bloom Color: white

Leaf Color: green

Hardiness Zone: 6, 7, 8, 9

Additional Tags: attracts bees, attracts butterflies, clumping, colonizing, cottage garden plant, cut flowers, deer resistant, drought tolerant, fragrant plant, naturalizing, rock garden plant

Pycnanthemum flexuosum (Appalachian mountainmint)
  • Pycnanthemum flexuosum (Appalachian mountainmint)
  • Pycnanthemum flexuosum (Appalachian mountainmint)
  • Pycnanthemum flexuosum (Appalachian mountainmint)
  • Pycnanthemum flexuosum (Appalachian mountainmint)

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Description

Pycnanthemum flexuosum

Also known as:

Appalachian mountainmint

,

Appalachian mountain mint

,

American mountain mint

Scientific Synonyms:

Koellia hugeri, Koellia hyssopifolia, Pycnanthemum hyssopifolium

Description

Pycnanthemum lexuosum, is member of the Mint family, that typically grows to a height of 3'. It has an open, elegant form with robust, branching stems.The leaves are densely produced along the stems, are narrow and toothless, and emit a pleasant spearmint aroma when crushed. They acquire attractive reddish and purplish hues towards the end of summer and into fall. The individual white flowers are tiny, but form dense button-like clusters about 1" in diameter. This is a profuse bloomer from mid-summer well into fall.

Cultivation

The common name Appalachian mountainmint is somewhat misleading because this species is far more abundant in the Mid-Atlantic coastal plains and south to the Florida panhandle. It is found growing in lowlands, swampy areas, and flood plains. Tolerant of wet feet, established plants withstand dry spells with ease, making this species a good selection for use in rain gardens. This is not an aggressive species and plants will slowly spread by underground runners. It adapts well to garden conditions with moist, well-drained soil in full to part-sun, but also tolerates heavy clay as well as sandy soils. Zones 6-9

Propagation

Easy to propagate from seed in the fall, or by division in early spring.

Additional Notes

This species is easy to grow, adaptable, and low maintenance. It can be used in rain gardens, or to control erosion, and is highly ornamental. Herbivores shy away from mountainmints, while pollinators flock to them in droves.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
AL, FL, GA, MS, NC, SC, VA

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 flexuosum Appalachian mountainmint