Clustered Mountain-mint
Pycnanthemum muticum
Last reviewed: July 2026
Pycnanthemum muticum (Clustered Mountain-mint) is a native perennial forb blooming July through September across the eastern United States. This adaptable wildflower attracts bees, butterflies, and wasps with its clusters of small white flowers.
Light
full sun
Water
medium
Size
12"–36" H × 12"–24" W
Bloom
Jul, Aug, Sep
Native to
AL, AR, CT, DE and 19 more states
Pollinators
bees, butterflies, wasps
Deer
Resistant (per Prairie Moon Nursery)
Browse plants for this ecoregion
Clustered mountain-mint is a native perennial herb that forms neat clumps of aromatic foliage topped with small white flower clusters. It blooms from July through September and maintains a tidy, upright growth habit that works well in formal and informal garden settings.
Growing Clustered Mountain-mint
Grow Clustered Mountain-mint in full sun and medium water. Mature plants reach 12 to 36 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Clustered Mountain-mint is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- May spread gradually by underground stems
Wildlife value
This plant is exceptionally valuable for pollinators, attracting bees, butterflies, and beneficial wasps throughout its long bloom period. The dense flower clusters provide abundant nectar and the plant often hosts multiple pollinator species simultaneously.
Common questions
- When does Clustered Mountain-mint bloom?
- Pycnanthemum muticum blooms from July through September, producing clusters of small white flowers that are highly attractive to pollinators.
- What pollinators visit Clustered Mountain-mint?
- This native mint attracts a variety of pollinators including bees, butterflies, and wasps. The small clustered flowers provide an excellent nectar source during late summer.
- Where is Pycnanthemum muticum native?
- Clustered Mountain-mint is native to much of the eastern United States, from Texas and Florida north to Michigan and Vermont, including states like Alabama, Arkansas, Connecticut, Georgia, Illinois, Kentucky, and many others.
- What growing conditions does Clustered Mountain-mint prefer?
- This adaptable perennial tolerates a wide range of conditions from full sun to partial sun and various moisture levels from wet to dry soils, making it suitable for diverse garden situations.
- Is Clustered Mountain-mint HOA-friendly?
- Clustered Mountain-mint is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Clustered Mountain-mint? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz