Pycnanthemum incanum.
Hoary Mountain Mint is a perennial wildflower native to the eastern United States where it can often be found growing in open woods and thickets, on hill sides and in old fields, and along the edges and clearings of woodlands.
The silvery-white plant grows to about 3 feet in height and produces large, white to deep purple flowers that bloom from July through September and are a favorite of bees, butterflies, and other beneficial pollinators.
Easily spreads to form small colonies, making it a great choice for larger gardens or meadow/prairie plantings.
Hoary Mountain Mint
Growth Chart
Hardiness Zones: 4 to 9 Light Requirement: Full to partial sun Soil Type: Rich, moist to dry Sow Depth: Surface Plant Spacing: 18 to 24 inches Germination Temp: 65°F to 70°F Germination Time: 20 to 30 days Bloom Time: July through September Growing Tips
Direct sow in early spring by lightly pressing the seeds into the soil's surface. If starting indoors, sow seeds in flats, keeping the soil moist and at a temperature around 70 degrees F until germination.