How to Grow Korean Green
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Korean Green
Brassica rapa subsp. perviridis
vegetableKorean Green, also known as Korean mustard green or perilla green, is a leafy brassica vegetable popular in Korean and Asian cuisines. It features tender, mild-flavored dark green leaves with a slightly sweet, tender texture when harvested young. This cool-season crop is prized for both raw and cooked applications in traditional Asian dishes.
When should you plant Korean Green in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Korean Green timeline · Pittsburgh, PA (Zone 6b)
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Plant Korean Green
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Korean Green
Around May 27≈ 40 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Korean Green dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9, with best performance in cooler seasons (spring and fall in warm regions)
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Seedling
1-2 weeksSmall cotyledons emerge with 2-4 true leaves developing. Plants are delicate and light green.
Keep soil consistently moist. Provide bright light to prevent leggy growth. Thin seedlings to proper spacing once first true leaves appear.
Vegetative Growth
2-3 weeksPlant develops more true leaves, stems thicken, and leaf size increases. Foliage becomes darker green and more tender.
Maintain consistent moisture and even soil temperature. Mulch to conserve water and keep roots cool. Begin fertilizing with balanced fertilizer every 2-3 weeks.
Mature Rosette
1-2 weeksPlant forms a full rosette of 8-12+ tender, dark green leaves. Ready for harvest at this stage.
Continue consistent watering and feeding. Monitor for bolting in warm weather—shade cloth or frequent harvest can delay this. Check regularly for pests and diseases.
Flowering/Bolting
Varies; accelerates in warm weatherFlower stalk emerges from center, leaves become tougher and more bitter, plant energy shifts to seed production.
This stage should be avoided for culinary use as leaves become less tender and flavorful. Harvest before this stage or plant in cooler seasons.
Seed Production
3-4 weeksSmall yellow flowers appear, followed by seed pods developing along the flowering stem.
Allow plants to complete cycle only if saving seeds. Most gardeners harvest before this stage for best eating quality.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Row covers on young plants, neem oil spray, diatomaceous earth, or introduce predatory beetles. Remove weeds that harbor overwintering beetles.
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Bacillus thuringiensis (Bt) spray, hand-picking, row covers before eggs hatch, or parasitic wasps.
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Strong water spray to dislodge, insecticidal soap, neem oil, or release of ladybugs and lacewings.
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Handpick at dawn, beer traps, copper tape barriers, diatomaceous earth, or encourage natural predators like ground beetles.
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Yellow sticky traps, reflective mulch, neem oil spray, or insecticidal soap.
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Ensure good air circulation, avoid overhead watering, remove infected leaves, and apply sulfur or copper fungicide if needed.
Uses
Kimchi & Traditional Korean Dishes
CulinaryKorean Green is a traditional ingredient in Korean cuisine, particularly in fermented kimchi and other preserved vegetables. Its mild flavor and tender texture make it ideal for both raw preparations and cooked dishes like stir-fries and soups. [source]
Salads & Fresh Greens
CulinaryYoung, tender leaves are excellent in fresh salads, offering a mild, slightly sweet flavor with a delicate texture. Can also be used as a raw vegetable wrap or side dish in Asian cuisine. [source]
Cooked Greens & Stir-fries
CulinaryThe leaves wilt quickly when cooked, making them perfect for stir-fries, soups, and braised vegetable dishes. Popular in Asian cuisines where it's lightly cooked to retain a tender-crisp texture. [source]
Nutritional & Antioxidant Benefits
MedicinalRich in vitamins A, C, and K, as well as minerals like calcium and iron. Brassica vegetables contain glucosinolates, compounds studied for potential anti-cancer and anti-inflammatory properties. [source]
Pollinator Support
WildlifeIf allowed to flower, Korean Green provides early-season nectar and pollen for bees, butterflies, and other beneficial insects. Yellow flowers are attractive to pollinators. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Begin harvesting outer leaves when plants are 4-6 inches tall for tender, mild-flavored greens. Pinch off leaves from the base or cut the entire rosette 1-2 inches above soil level for regrowth. Harvest in the morning after dew dries for best quality and flavor. Most tender and flavorful when harvested at 4-8 weeks; harvest before bolting begins. Can be harvested continuously for 3-4 weeks by picking outer leaves first.
Fun Facts
- 🌱 Korean Green is part of the diverse Brassica rapa species, which also includes bok choy, turnips, and Chinese cabbage—all from East Asia but with distinct characteristics.
- 🌱 In Korean cuisine, the fermentation process of kimchi with Korean Green not only preserves the vegetable but also creates beneficial probiotics that support digestive health.
- 🌱 Korean Greens can be harvested continuously for weeks by using the 'cut-and-come-again' method, making them highly productive in small garden spaces.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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