How to Grow Tai Long
Tai Long
Brassica juncea var. longissima
vegetableTai Long, also known as Chinese long mustard or long bean mustard, is an Asian brassica vegetable prized for its elongated, tender leafy stems and mild mustard flavor. It produces slender, upright stalks with small leaves that are harvested young for stir-frying and Asian cuisine. This heat-tolerant crop grows quickly and is popular in Southeast Asian gardening.
When should you plant Tai Long 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 Tai Long timeline · Pittsburgh, PA (Zone 6b)
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Plant Tai Long
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 Tai Long
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Tai Long dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-9; can be grown year-round in warmer climates
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Get my Tai Long timeline →Growth Stages
Seedling
1-2 weeksSmall cotyledons emerge within 5-7 days; first true leaves develop shortly after
Keep soil moist and maintain warm temperatures (65-75°F); thin seedlings to proper spacing; provide bright light to prevent leggy growth
Vegetative Growth
2-3 weeksMultiple upright stalks develop with small leaves; plants grow 8-12 inches tall; stem bases thicken slightly
Maintain consistent moisture and provide balanced fertilization every 2-3 weeks; mulch around plants to conserve water and suppress weeds; thin crowded stems if needed
Stem Elongation
1-2 weeksStalks rapidly extend upward, reaching 12-18+ inches; leaf density increases; tender young leaves crowd the stems
Continue regular watering and feeding; provide support or staking if plants become tall and floppy; monitor for bolting in hot weather
Harvest/Tender Stage
2-4 weeksPlants are at peak tenderness with vibrant green color and mild flavor; leaves remain small and succulent
Begin harvesting outer stems and leaves; avoid letting plants bolt; pinch or cut frequently to encourage branching and extend harvest; harvest in early morning for best texture
Post-Harvest/Decline
2-3 weeks before end of seasonIf not harvested, plants begin to flower and become fibrous and bitter; leaves enlarge and toughen
Remove plants once flowering begins or when flavor becomes too strong; succession plant every 2-3 weeks for continuous harvest
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Row covers, hand-picking, Bacillus thuringiensis (Bt), neem oil spray
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Row covers, reflective mulches, neem oil, spinosad, insecticidal soap
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Row covers, Bt spray, neem oil, removal of infested leaves
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Strong water spray, insecticidal soap, neem oil, ladybug introduction
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and
Hand-picking, beer traps, copper tape barriers, diatomaceous earth
Uses
Stir-fry & Asian Cooking
CulinaryTai Long is a staple in Southeast Asian cuisine, particularly beloved in stir-fries, soups, and noodle dishes. The tender stems and mild mustard flavor provide a pleasant textural contrast and slight peppery note without overwhelming heat. [source]
Fresh Greens & Salads
CulinaryYoung stems and leaves can be eaten raw in salads when very tender, offering a mild mustard bite. They are also delicious blanched, sautéed with garlic, or added to soups. [source]
Antioxidant & Anti-inflammatory Properties
MedicinalLike other brassicas, Tai Long contains glucosinolates and phenolic compounds that may support immune function and reduce inflammation. Traditional Asian medicine values mustard greens for supporting digestion and circulation. [source]
Quick Succession Cropping
HouseholdTai Long's short 30-50 day maturity makes it ideal for succession planting and continuous harvest throughout the growing season. Gardeners can sow new crops every 2-3 weeks for an extended supply. [source]
Pollinator & Beneficial Insect Support
WildlifeIf allowed to flower, Tai Long produces small yellow brassica flowers that attract pollinators and beneficial insects. Plants left to bolt support early-season bee and hoverfly populations. [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 when plants reach 10-12 inches tall, about 30-40 days after sowing. Pinch or cut the outer stems and tender leaves just above the base, leaving the growing center intact for continued production. Harvest in early morning when stems are most crisp. Regular harvesting (every 2-3 days) encourages bushier growth and extends harvest period. Plants remain tender and flavorful for 2-4 weeks before bolting. Remove entire plants once they flower or become too fibrous.
Fun Facts
- 🌱 Tai Long translates to 'long vegetable' or 'long Chinese mustard' and is especially popular in Taiwanese and Southeast Asian markets, where it is sometimes called 'long mustard stem' or 'oil mustard.'
- 🌱 Unlike heading brassicas (cabbage, broccoli), Tai Long is a non-heading leaf brassica that can be continuously harvested without killing the plant, making it extremely productive for small-space gardeners.
- 🌱 Tai Long thrives in warm weather and is often grown as a spring or fall crop in temperate zones, and year-round in subtropical and tropical regions; it bolts quickly in intense summer heat, so timing plantings for cooler seasons maximizes harvest quality.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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