Image of Pycnanthemum verticillatum
Source: Alan Weakley
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image of Flowering plant
Pycnanthemum verticillatum
Whorled Mountain-mint
Pycnanthème verticillé
No seeds available for this plant.

We are not accepting seeds for this plant at the moment.

Bloom Colour: White Bloom Period: Jul - Aug
Max Height: 3.0 feet
Max Width: 1.5 feet (spreads by rhizome)
Light Condition:
Full sun More than 6 hours of direct sun a day
Part shade More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Moisture medium Tolerates medium soil condition
Lifespan: Perennial plants that will that come back year after year
Gardener Experience:
plant spread by rhizome Spreads by rhizome
plant germinate easy Easy to germinate
plant self seeding Self-seeding
Landscape Uses:
rock garden Suitable for rock gardens
container suitable Suitable for container garden
school garden Suitable for school gardens
Ecological Benefits: No ecological benefits information available.
Tolerates:
Deer Resistant Deer resistant
Rabbit Resistant Rabbit resistant
Transplantation Tolerant Tolerates transplantation
Special Features and Considerations:
plant endangered This plant is endangered

Plant Location

Distribution according to VASCAN

Distribution: Pycnanthemum verticillatum
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent

Thrives in Ecozones

  • Mixed Wood Plains

Ecological Benefits

Butterflies Supported by Pycnanthemum verticillatum

No butterfly data available for this plant.

Specialized Bees Supported by Pycnanthemum verticillatum

No bee data available for this plant.

Plants that grow in similar conditions, that bloom at the same time.

Complementary Plants

  • No complementary plants found.

Substitute For Non-Native Plants

  • Lamium (Dead nettle)
  • Ajuga reptans (Bugleweed)
  • Salvia (Non-Native Sage)
  • Lamium galeobdolon (Yellow Archangel)
  • Leucanthemum (Shasta Daisy)
  • Gerbera (Gerbera Daisy)
  • Hesperis matronalis (Dame Rocket)
  • Mentha (Non-Native Mints)
  • Monarda (Beebalm Cultivars)

Sowing Information

Download Seed Envelope Labels (PDF)
  • Sowing depth: Surface sow
  • Sow anytime
  • Stratification duration: 0 days
  • Self-seeding

Harvesting and Seed Sharing

  • Harvest start month: November
  • Harvesting indicator:
    • Pods are brown and crisp and starting to open
    • Seeds are dark and tiny stem attaching to the main stem is brown
    • Seeds easily fall off pod when shaken
    • Little stem connecting the pod to the main stem is brown (not green)
  • Harvesting:
    • Put pods in food processor or blender and blend seeds, and strain seeds using a strainer
  • Seed viability test:
    • No test needed before donating
  • Packaging measure: 1 rounded 1/32 teaspoon
  • Seed storage:
    • Air dry in paper bag or open container, for a few days until crisp
    • Shake seeds to move them once in a while to prevent molding
  • Cultivar: No, you can donate without knowing the source as there are only straight species
  • Remove non-seed material
  • No harvesting video available at this time.

Toxicity Notes

Not known to be toxic to mammals if ingested.