Hoary Mountain Mint

Pycnanthemum incanum

Also called Silverleaf Mountain Mint

  • Upper leaves have a hoary or whitish appearance
  • Small two-lipped white flowers have purple spotting on the lower lip
  • All parts of the plant emit a spearmint-like aroma when crushed
  • Flowers are favoured by butterflies and other small insects
  • Bloom Time: July to September

ZONE:
4

COLOUR:
White

HEIGHT:
60-90 cm

SPREAD:
60-90 cm

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Growing and Maintenance Tips:


Grows best in partial sun or shade in an average to moist, well-drained soil. Full sun tolerant when adequate moisture is provided. Naturally found near woodland edges or moist meadows. Naturalizes by seed and can be aggressive, less so in drier sites. To prevent excessive spreading, remove seed heads in early fall. This species is endangered in Ontario, so consider seeding a vacant lot with the produce.

Additional Notes about Hoary Mountain Mint:


Native to Ontario

High-value native perennial, listed as Endangered in Ontario. Larval host for several butterflies and moths, including the Wavy-Lined Emerald moth. The long-blooming flowers offer nectar for butterflies, moths, many species of bees, and other insects. In winter, the stalks and seed heads remain standing, providing cover and food for birds. The plant has a strong fragrance, deterring deer, rabbits, groundhogs etc, while attracting predatory insects, helping with natural pest control.

Characteristics & Attributes


ATTRACTS WILDLIFE:
Attracts Pollinators
FLOWERING TIME:
Summer
LANDSCAPE USES:
Naturalizing