Narrowleaf Mountain Mint
Pycnanthemum tenuifolium 'Cat Springs'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
30 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
North America
Toxicity
Non-toxic
The Story
Plant Bio
Pycnanthemum tenuifolium, commonly known as narrow-leaved mountain mint, is a perennial herb with slender, aromatic leaves and clusters of small, white to pale purple flowers that attract pollinators. The cultivar 'Cat Springs' is distinguished by its vigorous growth and heightened aromatic qualities, making it especially attractive for ornamental and medicinal use in native plant gardens.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into moist soil in early spring.
- Water regularly until established, about 6 weeks.
- Place in full sun for optimal growth.
- Thin seedlings to prevent overcrowding.
- Fertilize lightly in spring with balanced fertilizer.
- Prune after flowering to encourage bushiness.
Pro Tip
Ensure well-draining soil and full sun for best performance.
Keep It Thriving
Care Guide
Do
- Water during dry spells 🌱
- Prune to shape after flowering
- Mulch to retain moisture
Don't
- Overwater to avoid root rot ❌
- Skip pruning which can lead to legginess
- Use heavy fertilization unnecessarily
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
Narrowleaf Mountain Mint questions
What zones can Narrowleaf Mountain Mint grow in?
Narrowleaf Mountain Mint is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Narrowleaf Mountain Mint deer resistant?
Yes — Narrowleaf Mountain Mint is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Narrowleaf Mountain Mint bloom?
Narrowleaf Mountain Mint typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Narrowleaf Mountain Mint need full sun?
Narrowleaf Mountain Mint does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Narrowleaf Mountain Mint drought tolerant?
Yes — once established (usually after the first full season), Narrowleaf 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 Narrowleaf 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.
