Clustered Mountain Mint
Pycnanthemum muticum
Essentials
At a Glance
Plant Type
Perennial
Height
30 inches
Width
30 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Medium to wet
Humidity
Average
Lifespan
Perennial
Native To
Eastern North America
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
This species is known for its fragrant foliage and clusters of white flowers that attract pollinators. It is particularly notable for its adaptability to various soil types and its ability to thrive in moist conditions.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into moist soil in early spring for best germination.
- Mist cuttings regularly to maintain humidity during rooting.
- Transplant seedlings when they develop strong roots, typically after 6 weeks.
- Ensure the plant is in full sun for optimal growth.
- Water consistently, especially during dry spells, to promote healthy foliage.
- Mulch around the base to retain soil moisture and suppress weeds.
Pro Tip
Plant in well-drained soil with full sun for vigorous growth and abundant blooms.
Keep It Thriving
Care Guide
Do
- Water deeply once a week during dry periods 🌱
- Prune back after flowering to encourage bushy growth
- Fertilize in early spring with a balanced organic fertilizer
- Provide good air circulation to prevent fungal issues
- Mulch to conserve moisture and suppress weeds
Don't
- Avoid overwatering to prevent root rot ❌
- Don’t prune in late fall or winter
- Avoid planting in shady areas, as it prefers full sun
- Don’t ignore pest signs early
- Avoid heavy, clay soils without amendment
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Harvest | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Clustered Mountain Mint questions
What zones can Clustered Mountain Mint grow in?
Clustered Mountain Mint is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Clustered Mountain Mint deer resistant?
Yes — Clustered Mountain Mint is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Clustered Mountain Mint bloom?
Clustered Mountain Mint typically blooms in mid to late summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Clustered Mountain Mint need full sun?
Clustered Mountain Mint does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Clustered Mountain Mint drought tolerant?
Yes — once established (usually after the first full season), Clustered Mountain Mint handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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Grow Clustered Mountain Mint with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
