perennialN. America Native

Korean Mint

The Story

Plant Bio

Agastache rugosa, or Korean Mint, is an upright perennial herb known for its aromatic, licorice-scented foliage and dense spikes of lavender to purple flowers that are highly attractive to pollinators.

This species is valued in both ornamental and culinary gardens. It blooms for a long period from mid-summer to fall and often self-seeds readily.

Uses & Benefits:

Agastache canagaria adds vibrant color and aromatic foliage to gardens, attracting pollinators and enhancing visual appeal.

Its drought tolerance makes it ideal for water-wise landscapes, reducing maintenance needs.

Supports bees, butterflies, and hummingbirds, contributing to local biodiversity.

Essentials

At a Glance

Plant Type

Perennial

Height

36 inches

Width

30 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9

Water

Low to moderate

Humidity

Average

Lifespan

Perennial

Native To

East Asia

Toxicity

Non-toxic to humans and pets

Bloom period

Late summer – Early fall

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds into well-draining soil in early spring for best germination.
Water regularly to keep soil moist but not waterlogged during establishment.
Mist cuttings in a humid environment to encourage root growth.
Transplant seedlings after they develop strong roots, typically in late spring.
Fertilize with a balanced organic fertilizer every 6 weeks during active growth.
Mulch around plants to retain moisture and suppress weeds.

Pro Tip

Ensure well-draining soil and full sun for healthy growth and vibrant flowering.

Keep It Thriving

Care Guide

Do

Water deeply when the top inch of soil feels dry 🌱
Prune after flowering to promote bushier growth
Apply organic mulch to conserve moisture

Don't

Avoid overwatering to prevent root rot ❌
Don’t fertilize in late fall to prevent weak new growth
Refrain from overcrowding to ensure good air circulation

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Harvest
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Aromatic herb borderWildflower meadow accentDrought-tolerant garden feature

Companion Plants

Lavender Echinacea SalviaYarrow Coreopsis

Multiply

Propagation Methods

Good to Know

Common Questions

Korean Mint questions

What zones can Korean Mint grow in?

Korean Mint is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Korean Mint deer resistant?

Yes — Korean Mint is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Korean Mint bloom?

Korean Mint typically blooms in 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 Korean Mint need full sun?

Korean Mint does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Korean Mint drought tolerant?

Yes — once established (usually after the first full season), Korean Mint handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.