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Perennial flower
Lamiaceae
Organic seeds
Les jardins de l'écoumène
Agastache rugosa
Korean mint is an elegant and perfumed perennial that brings to the garden a presence both floral, aromatic and deeply alive. The foliage releases notes of mint, anise and licorice, making it interesting to brush against as well as to view in the garden. Its well-branched growth gives structure to borders while retaining a soft, natural appearance suited to food gardens and ornamental plantings. Easy to integrate into a well drained soil and a light exposure, it flourishes generously while requiring relatively little maintenance once properly installed. Containing as in the open ground, it brings height, fragrance and movement with a beautiful seasonal constancy.
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Discover the plant
Common nameKorean Mint; Korean hyssop
FamilyLamiaceae
GenusGiant Hyssop
Speciesrugose
TypePerennial flower
Botanical nameAgastache rugosa
Reproducible seedsYes
Agastache rugosa — Korean Mint. Korean mint is an elegant and perfumed perennial that brings to the garden a presence both floral, aromatic and deeply alive. The foliage releases notes of mint, anise and licorice, making it interesting to brush against as well as to view in the garden. Its well-branched growth gives structure to borders while retaining a soft, natural appearance suited to food gardens and ornamental plantings. Easy to integrate into a well drained soil and a light exposure, it flourishes generously while requiring relatively little maintenance once properly installed.
Sowing perennial herb seeds: spring, after 7 days of cold stratification. Sow on the surface, without covering. Germination usually takes 7 to 21 days. For germination, keep the soil at 18 to 22°C (64 to 72°F). Label herbs when sowing so that you can distinguish species whose first leaves look alike. Transplant seedlings without crushing their crowns, and gradually give them more space under the grow lights. Wait until the roots fill the root ball before moving the plants into their final growing location. Allow a plant intended for repeated harvesting to become established before removing large amounts of foliage.
An herb garden is more convenient when it is close to a path or the kitchen. Group species with similar moisture needs, leaving enough space around each clump for growth. A labelled border makes it easy to find the herb flavour you want for a meal. Keep more vigorous vegetables from shading young herb plants while they are becoming established. For herbs grown for their leaves, take several small harvests rather than cutting away all the plant’s leafy growth at once. Prepare clean, healthy leaves shortly before the meal when you are ready to use them.
In the garden
- Exposure
- Full sun to partial shade
- Life cycle
- Perennial
Sowing guide
Sowing & germination
Sowing depth
Surface, without covering
Germination temperature
18 to 22°C (64 to 72°F)
Germination time
7 to 21 days
Sowing period
Spring, after 7 days of cold stratification
Propagation
From seed
Growing method
Recommended seeding period: spring, after 7 days of cold stratification. Sow on the surface, without covering. Germination usually takes 7 to 21 days. For germination, keep the soil at 18 to 22°C (64 to 72°F). Label herbs when sowing so that you can distinguish species whose first leaves look alike. Transplant seedlings without crushing their crowns, and gradually give them more space under the grow lights. Wait until the roots fill the root ball before moving the plants into their final growing location. Allow a plant intended for repeated harvesting to become established before removing large amounts of foliage. Harvest small stems or a few leaves at a time, leaving the plant enough vegetation to continue growing. A clean cut is better than tearing off a leaf with a piece of stem attached. Remove the dry parts and observe the formation of the flower buds according to the desired use. If you want to dry an herb harvest, spread it in a thin layer in a well-ventilated place protected from direct sunlight. For herbs grown for their leaves, take several small harvests rather than cutting away all the plant’s leafy growth at once.
Soil and care
Soil & care
Watering
Keep a steady moisture around the roots, without soaking the soil. Check the soil with a finger before watering, and direct the water to the base of the plant to limit splashing onto leaves intended for harvest. For container-grown plants, always allow excess water to drain away and empty the saucer afterwards. Check young seedlings carefully, as their small, developing root systems leave them vulnerable to drying out. Adjust the amount of water you provide according to rainfall, wind and heat.
Soil type
Prepare a moderately fertile and well drained soil. Label herbs when sowing so that you can distinguish species whose first leaves look alike. Transplant seedlings without crushing their crowns, and gradually give them more space under the grow lights. Wait until the roots fill the root ball before moving the plants into their final growing location. Allow a plant intended for repeated harvesting to become established before removing large amounts of foliage.
Fertilization
Fertilization supports growth and should take into account the nutrients already present in the soil or potting mix. Use mature compost or a fertilizer suitable for the crop, following the recommended application rate. Avoid combining too many products, especially in a container where the roots have a limited volume of growing medium. Water as needed after applying nutrients, and observe foliage growth before deciding whether another fertilizer application is necessary.
Moisture
Keep the growing mix moist during germination, without standing water; then adjust to the crop
Seasonal care
Label herbs when sowing so that you can distinguish species whose first leaves look alike. Transplant seedlings without crushing their crowns, and gradually give them more space under the grow lights. Wait until the roots fill the root ball before moving the plants into their final growing location. Allow a plant intended for repeated harvesting to become established before removing large amounts of foliage. Harvest small stems or a few leaves at a time, leaving the plant enough vegetation to continue growing. A clean cut is better than tearing off a leaf with a piece of stem attached. Remove the dry parts and observe the formation of the flower buds according to the desired use. If you want to dry an herb harvest, spread it in a thin layer in a well-ventilated place protected from direct sunlight. For herbs grown for their leaves, take several small harvests rather than cutting away all the plant’s leafy growth at once. Prepare clean, healthy leaves shortly before the meal when you are ready to use them. If you also want to enjoy the flowers, keep some stems intact. This lets you separate the area reserved for leaf harvests from the flowering area left for visiting insects. Korean mint is an elegant and perfumed perennial that brings to the garden a presence both floral, aromatic and deeply alive. The foliage releases notes of mint, anise and licorice, making it interesting to brush against as well as to view in the garden.
Container growing
Container growing
Suitable for containers
Yes
Recommended pot size
A stable container with drainage holes, enough width for the plant’s spread and sufficient depth for its roots
Choose a growing position with full sun to partial shade. Reserve this spread around the plant: 45 to 60 cm (18 to 24 in). An herb grown in a container is easy to move when you need to adjust its exposure to sunlight. The pot should provide air around the roots and allow excess water to drain away freely. Repeated harvesting is easier and cleaner when the foliage extends freely beyond the rim of the container. Turn the container occasionally if the light comes from one side only. Adjust watering to the needs of each species rather than treating every herb in the same planter in exactly the same way. Containing as in the open ground, it brings height, fragrance and movement with a beautiful seasonal constancy. Korean mint is an elegant and perfumed perennial that brings to the garden a presence both floral, aromatic and deeply alive. The foliage releases notes of mint, anise and licorice, making it interesting to brush against as well as to view in the garden. Its well-branched growth gives structure to borders while retaining a soft, natural appearance suited to food gardens and ornamental plantings. Easy to integrate into a well drained soil and a light exposure, it flourishes generously while requiring relatively little maintenance once properly installed.
Bloom and dimensions
Size, flowering & harvest
Mature height
1.1 m (3.6 ft)
Width / spread
45 to 60 cm (18 to 24 in)
Growth habit
Upright
Bloom period
The plant’s usual flowering season extends from July through September. Decide which stems to keep flowering and which to leave in place so that they can develop seeds. Deadheading is suitable for many annuals, while developing seed heads and dried flower clusters can also provide ornamental interest. Keep plants labelled after flowering ends, and remove self-sown seedlings that are growing in a path.
Fruiting
For herbs grown for their leaves, take several small harvests rather than cutting away all the plant’s leafy growth at once. Prepare clean, healthy leaves shortly before the meal when you are ready to use them. If you also want to enjoy the flowers, keep some stems intact. This lets you separate the area reserved for leaf harvests from the flowering area left for visiting insects. Harvest small stems or a few leaves at a time, leaving the plant enough vegetation to continue growing.
Harvest
July to September
Garden associations
Companion plants & uses
Companion plants
In a mixed planting, you can reserve sections close to these plants: lavender, echinacea, bee balm. The association is used here to organize space and crops. Allow for the height, light requirements and water needs of each plant, leaving enough room between the foliage. Keep a path clear for watering and harvesting, then remove finished crops to make room for the next planting. This arrangement makes maintenance easier without promising protection against garden pests. An herb garden is more convenient when it is close to a path or the kitchen.
Garden use
For herbs grown for their leaves, take several small harvests rather than cutting away all the plant’s leafy growth at once. Prepare clean, healthy leaves shortly before the meal when you are ready to use them. If you also want to enjoy the flowers, keep some stems intact. This lets you separate the area reserved for leaf harvests from the flowering area left for visiting insects. Korean mint is an elegant and perfumed perennial that brings to the garden a presence both floral, aromatic and deeply alive. The foliage releases notes of mint, anise and licorice, making it interesting to brush against as well as to view in the garden.
Recipe idea
From garden to table
Edible parts
Leaves and flowers
Recipe idea using Korean Mint: aromatic infusion for two cups. Use a small teaspoon of dried leaves or flowers for food use, depending on the plant, for 250 ml of hot water. Prepare two cups separately, let infuse for five to ten minutes, then filter. Taste before adding some honey. For this agastache, use healthy and clean aromatic leaves; discard the damaged parts before preparing your infusion. Enjoy this infusion for its aroma and flavour. Prepare the ingredients with clean utensils and adapt the cut to the size of your harvest. This recipe highlights freshly picked parts: remove damaged pieces before preparation. If you double the quantities, keep enough space in the dish to mix or cook evenly. Quickly place leftovers in the refrigerator in a closed container and consume them within two days. To prepare a smaller meal for two people, use half of every ingredient quantity given in this recipe.
Frequently asked questions
Frequently asked questions
How do I grow Korean Mint from seed?
Recommended seeding period: spring, after 7 days of cold stratification. Sow on the surface, without covering. Germination usually takes 7 to 21 days. For germination, keep the soil at 18 to 22°C (64 to 72°F). Label herbs when sowing so that you can distinguish species whose first leaves look alike. Transplant seedlings without crushing their crowns, and gradually give them more space under the grow lights. Wait until the roots fill the root ball before moving the plants into their final growing location. Allow a plant intended for repeated harvesting to become established before removing large amounts of foliage.
Can I grow Korean Mint in a container?
Choose a growing position with full sun to partial shade. Reserve this spread around the plant: 45 to 60 cm (18 to 24 in). An herb grown in a container is easy to move when you need to adjust its exposure to sunlight. The pot should provide air around the roots and allow excess water to drain away freely. Repeated harvesting is easier and cleaner when the foliage extends freely beyond the rim of the container. Turn the container occasionally if the light comes from one side only. Adjust watering to the needs of each species rather than treating every herb in the same planter in exactly the same way. Korean mint is an elegant and perfumed perennial that brings to the garden a presence both floral, aromatic and deeply alive.
When can I harvest Korean Mint?
For herbs grown for their leaves, take several small harvests rather than cutting away all the plant’s leafy growth at once. Prepare clean, healthy leaves shortly before the meal when you are ready to use them. If you also want to enjoy the flowers, keep some stems intact. This lets you separate the area reserved for leaf harvests from the flowering area left for visiting insects. Harvest small stems or a few leaves at a time, leaving the plant enough vegetation to continue growing. A clean cut is better than tearing off a leaf with a piece of stem attached. Remove the dry parts and observe the formation of the flower buds according to the desired use.
What makes Korean Mint distinctive in the garden?
Korean mint is an elegant and perfumed perennial that brings to the garden a presence both floral, aromatic and deeply alive. The foliage releases notes of mint, anise and licorice, making it interesting to brush against as well as to view in the garden. Its well-branched growth gives structure to borders while retaining a soft, natural appearance suited to food gardens and ornamental plantings. Easy to integrate into a well drained soil and a light exposure, it flourishes generously while requiring relatively little maintenance once properly installed. Containing as in the open ground, it brings height, fragrance and movement with a beautiful seasonal constancy.
How do I arrange a planting of Korean Mint?
An herb garden is more convenient when it is close to a path or the kitchen. Group species with similar moisture needs, leaving enough space around each clump for growth. A labelled border makes it easy to find the herb flavour you want for a meal. Keep more vigorous vegetables from shading young herb plants while they are becoming established. Harvest small stems or a few leaves at a time, leaving the plant enough vegetation to continue growing. A clean cut is better than tearing off a leaf with a piece of stem attached. Remove the dry parts and observe the formation of the flower buds according to the desired use.
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