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Pollinate Happiness
Native to the Northeast, the Mid-Atlantic, the Southeast, and beyond

Clustered mountain mint

Pycnanthemum muticum

The most-visited plant in Penn State's 2012 to 2014 pollinator trial: wasps, bees, flies, and butterflies by the hundreds.

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Scale and context

One plant, several views

Plant 2–3 ft. Flowers ⅛ in in ½-in heads; the silvery leaves around them are 1 in. These photos are all one individual, photographed in County Road 4777, Warren, TX, US in July 2021, so you can see how a close-up relates to the whole plant.

Who it feeds

In Penn State's 2012 to 2014 pollinator trial at Landisville, clustered mountain mint drew more pollinator visits than any other plant tested, every year: bees, wasps, flies, beetles, and butterflies by the hundreds. The predatory wasps it draws control garden caterpillars.

What it does for the place

A pollinator hub that also repels deer and rabbits, tolerates drought once established, and spreads into a manageable clump.

The story

A mint-family native of eastern meadows with silvery bracts that make the whole plant look frosted in July. Indigenous peoples used it as a seasoning and a fever tea; the leaves smell strongly of spearmint.

Worth knowing

  • Rub a leaf on your skin; it is a traditional mosquito repellent.
  • The bracts are silver because of a waxy coating that reflects light.
  • It grows in mountains and meadows alike; the name is misleading.

Saving its seed

Ripe: Oct, Nov. Dry flat heads shed tiny seed when tapped.

Collect: Shake heads into a bag; sift.

Sow: No pretreatment needed; sow in spring after frost or in fall. Surface sow; needs light. No cold needed: Prairie Moon lists it as germinating without pretreatment, sown on the surface. Winter sowing outdoors is optional and still works.

Cold-stratification days follow Prairie Moon Nursery's January 2026 germination codes where that nursery lists the species; others follow common nursery practice. Protocols vary with seed lot and supplier, so check your seed packet.

Seed saving calendar for your zip code →

Plant it instead of

  • Mugwort: The gray-green weed that takes over every disturbed lot, roadside, and garden bed on Long Island, spreading by rhizomes and suppressing neighbors chemically.

Sources and further reading