Photo: Yurii BasovCC BY 4.0via iNaturalistresized / cropped
Korean Mint Plant Care
Agastache rugosa Kuntze
Updated · Sources · How we source care data
With its bright, aromatic leaves and tall, spiky purple flowers, this plant originates from East Asia. Plant collectors are drawn to its unique combination of beauty and medicinal properties, making it a sought-after addition to any garden or collection.
Every 7–10 days
Full sun to partial shade
50–85°F
40–60%
At a glance
How do you care for Korean Mint?
Water Korean Mint every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–85°F (10–29°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Korean Mint Native To?
What Is the Korean Mint?
Korean Mint (Agastache rugosa) belongs to the Lamiaceae family within the Agastache genus. Korean Mint is native to East Asia. Korean Mint is also known as Wrinkled Giant Hyssop, Anise Hyssop.
Korean Mint displays an upright, bushy perennial growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Korean Mint produces spiky clusters of tubular flowers in shades of purple, pink, or blue.
Leaf size: approximately 4 inches.
How Often Should You Water a Korean Mint?
Agastache rugosa requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Korean Mint Need?
Korean Mint thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Korean Mint Prefer?
Agastache rugosa grows best at temperatures of 50–85°F. Korean Mint prefers humidity levels of 40–60%.
Temperature
50–85°F
Humidity
40–60%
What Soil Mix Works Best for a Korean Mint?
Well-draining sandy loam with added compost for nutrients. Good drainage is essential for Korean Mint to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Korean Mint?
Feed Korean Mint every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Korean Mint?
Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Korean Mint?
Korean Mint can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to anise hyssop plant care, which shares the same genus.
Is the Korean Mint Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Korean Mint, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Korean Mint?
Korean Mint is susceptible to aphids, spider mites, whiteflies. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Korean Mint Need?
Korean Mint grows outdoors in USDA Zone 12a – 9b. It survives winters down to planting zone 12a. Korean Mint is native to East Asia. In cooler regions, grow Korean Mint as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a – 9b
Keep exploring plants
Korean Mint is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Agastache genus — compare its care with other Agastache species on PlantoScan.
Agastache is part of the Lamiaceae plant family — browse all Lamiaceae genera and species.
Korean Mint thrives in bright light and direct sun — see other bright-light plants.
More Agastache Species
Other Agastache species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Agastache rugosa Kuntze, family Lamiaceae (first published in Revis. Gen. Pl. 2: 511 (1891)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Korean Mint, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Yurii Basov, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 12a – 9b, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
Identify Plants Like the
Korean Mint Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species