Plant Profile: Pycnanthemum flexuosum

Taxonomy: Pycnanthemum flexuosum

Names

Appalachian Mountain Mint, Mountain Mint, Savannah Mountain Mint

  • Photo of Pycnanthemum flexuosum (Pycnanthemum flexuosums)

Phonetic Spelling:pik-NAN-thee-mum fleks-yoo-OH-sum

Genus:Pycnanthemum

Species:flexuosum

Family:Lamiaceae

Mountain mint is a perennial plant native to North Carolina, belonging to the mint family, and is predominantly found in the coastal and Piedmont regions of the state. Its aromatic leaves and blossoms are particularly appealing to various pollinators, such as bees, butterflies, and wasps. Additionally, this plant is resilient against browsing by rabbits and deer. In late summer, it showcases rounded clusters of tubular flowers that range in color from white to lavender.

This plant thrives in rich, loamy soil that retains moisture while providing excellent drainage, and it prefers full sun to partial shade. Once established, mountain mint can withstand drier conditions. It is an excellent choice for pollinator gardens, naturalized landscapes, meadows, or areas adjacent to ponds and streams.

Pycnanthemum flexuosum Feature Summary

Pycnanthemum flexuosum Image Gallery

Tags

#perennial
#white flowers
#wildlife plant
#native perennial
#nectar plant
#NC native
#summer flowers
#deer resistant
#native garden
#pollinator plant
#larval host plant
#NC Native Pollinator Plant
#butterfly friendly
#nectar plant late summer
#butterfly larvae
#pollinator garden
#host plant
#wavy-lined emerald butterfly

Similar Plants

Pycnanthemum flexuosum Feature Summary

Attributes
Used in herbal medicine
AL, FL, GA, MS, NC, SC, VA
Attracts pollinators including bees, butterflies, wasps. A larval host plant for the Gray Hairstreak Butterfly and This plant supports Wavy-lined Emerald (Synchlora aerata).
Perennial
Flowers
Terminal dense globular clusters of tiny white to lavender tubular flowers with purple spots. Blooms late summer.
Purple/Lavender
White
< 1 inch
Leaves
Thick oval to lance-shaped fragrant green leaves with toothed margins are red-tinged in fall.
Elliptical
Lanceolate
Stem
Whole Plant Traits
Native Plant
Erect
Spreading
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Acid (<6.0)
Good Drainage
Moist
Coastal
Mountains
Piedmont
Loam (Silt)
Landscape
Butterfly Garden
Pollinator Garden
Native Garden
Meadow
Naturalized Area
Pond
Butterflies
Pollinators

Pycnanthemum flexuosum Attributes

Pycnanthemum flexuosum: Uses (Ethnobotany)

Used in herbal medicine

Pycnanthemum flexuosum: Country Or Region Of Origin

South East U.S.A

Pycnanthemum flexuosum: Distribution

AL, FL, GA, MS, NC, SC, VA

Pycnanthemum flexuosum: Wildlife Value

Attracts pollinators including bees, butterflies, wasps. A larval host plant for the Gray Hairstreak Butterfly and This plant supports Wavy-lined Emerald (Synchlora aerata).

Pycnanthemum flexuosum: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Pycnanthemum flexuosum Flowers

Pycnanthemum flexuosum: Flower Description

Terminal dense globular clusters of tiny white to lavender tubular flowers with purple spots. Blooms late summer.

Pycnanthemum flexuosum: Flower Color

filter_vintage
Purple/Lavender
filter_vintage
White

Pycnanthemum flexuosum: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Pycnanthemum flexuosum: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Pycnanthemum flexuosum: Flower Bloom Time

Winter
Spring
Summer
Fall

Pycnanthemum flexuosum: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Pycnanthemum flexuosum: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Pycnanthemum flexuosum Leaves

Pycnanthemum flexuosum: Leaf Description

Thick oval to lance-shaped fragrant green leaves with toothed margins are red-tinged in fall.

Pycnanthemum flexuosum: Leaf Color

spa
Green

Pycnanthemum flexuosum: Deciduous Leaf Fall Color

spa
Red/Burgundy

Pycnanthemum flexuosum: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Pycnanthemum flexuosum: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Pycnanthemum flexuosum: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Pycnanthemum flexuosum: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Pycnanthemum flexuosum: Hairs Present

No
Yes

Pycnanthemum flexuosum: Leaf Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long-lasting
Showy

Pycnanthemum flexuosum Stem

Pycnanthemum flexuosum: Stem Description

Branched green square stems

Pycnanthemum flexuosum: Stem Color

grass
Green

Pycnanthemum flexuosum: Stem Is Aromatic

No
Yes

Pycnanthemum flexuosum: Stem Cross Section

Angular
Oval
Round
Square

Pycnanthemum flexuosum Whole Plant Traits

Pycnanthemum flexuosum: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Pycnanthemum flexuosum: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Pycnanthemum flexuosum: Growth Rate

Slow
Medium
Rapid

Pycnanthemum flexuosum: Maintenance

Low
Medium
High

Pycnanthemum flexuosum Cultural Conditions

Pycnanthemum flexuosum: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Pycnanthemum flexuosum: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Pycnanthemum flexuosum: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Pycnanthemum flexuosum: NC Region

Coastal
Mountains
Piedmont

Pycnanthemum flexuosum: USDA Plant Hardiness Zone

thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Pycnanthemum flexuosum: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Pycnanthemum flexuosum Landscape

Pycnanthemum flexuosum: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Pycnanthemum flexuosum: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Pycnanthemum flexuosum: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Pycnanthemum flexuosum: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Pycnanthemum flexuosum: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees