Hoary Mountain Mint, Silverleaf Mountain Mint

Hoary Mountain Mint, Silverleaf Mountain Mint

Pycnanthemum incanum

A native perennial with ornamental blooms valued for pollinator support in naturalized and border settings.

  • 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
Size
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Plant Characteristics

Sunlight
Full sun, Partial shade, Shade
Soil Moisture
Dry, Average, Well-drained
Drought Tolerant
Hardiness Zone
4 – 4
Mature Height (meters)
0.6 – 0.9
Mature Spread (meters)
0.6 – 0.9
Growth Rate
Medium
Flower Colour
White
Foliage Colour
Gray
Bloom Time
Summer
Habit
Upright
Deer Resistant
Rabbit Resistant
Pollinator Friendly
Ontario Native
Fragrant
Landscape Uses
Border, Accent, Mass planting
Growing & 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.
Notes
Native to Ontario

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