[3] The leaves are larger towards the base of the plant, have toothed edges,[7] and are directly attached to the main stem (sessile).

[4] They also have very distinct veins and this characteristic, along with the compactness of the flowering heads, helps to distinguish this species from others of its genus.

[5] The flowers of Pycnanthemum muticum are small and densely packed into heads,[7] but surrounded by large silvery colored bracts.

[2] An additional move was proposed by John Kunkel Small and Anna Murray Vail using the work of Nathaniel Lord Britton in 1893 naming it Koellia mutica, but this is generally regarded as a taxonomic synonym.

[19] This species is found in scattered locations from Florida to Maine on the east coast of the United states and as far west as Texas and Michigan.

[12] Pycnanthemum muticum may be found growing wild in woods, swamps, thickets, or fields, usually on moist, freely draining soils.

[1] Clustered mountain mint is sometimes grown in gardens, particularly ones emphasizing native plants or to benefit pollinators.

[8] Many different kinds of insects are attracted to the strong nectar flow including bees, wasps, moths, and butterflies.

[8] Gardeners propagate plants by division, especially taking young vigorous growth from the edge of a clump early in the spring.