How to Grow Pe-tsai
Pe-tsai
Brassica rapa subsp. pekinensis
vegetablePe-tsai, also known as Chinese cabbage or napa cabbage, is a leafy brassica that forms elongated, tightly packed heads with mild, tender leaves. It has a crisp texture and subtle flavor, making it popular in Asian cuisine and increasingly in Western salads and stir-fries. Unlike round cabbage, pe-tsai develops compact, cylindrical heads with prominent white midribs.
When should you plant Pe-tsai in your zone?
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Example Pe-tsai timeline · Pittsburgh, PA (Zone 6b)
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Plant Pe-tsai
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 Pe-tsai
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Pe-tsai dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9; performs best as a cool-season crop in spring and fall
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Get my Pe-tsai timeline →Growth Stages
Seedling
2-3 weeksDevelops first true leaves with characteristic serrated edges; cotyledons emerge within 7-10 days
Keep soil moist but not soggy. Thin seedlings to proper spacing once they have 2-3 true leaves. Protect from slugs and flea beetles with row covers.
Vegetative Growth
3-4 weeksForms rosette of outer leaves while gradually developing the characteristic elongated head structure; leaves are tender and pale green
Maintain consistent watering and apply balanced fertilizer every 2-3 weeks. Monitor for cabbage worms and aphids. Keep weed-free.
Head Formation
2-3 weeksOuter leaves elongate and begin curling inward; head becomes increasingly compact and cylindrical with prominent white midribs becoming visible
Continue consistent watering as head development is sensitive to moisture stress. Apply nitrogen-rich fertilizer if growth slows. Watch for splitting if watering is inconsistent.
Maturity
1-2 weeksHead firms up completely with tight, overlapping leaves; head reaches full size (6-12 inches tall, 3-5 inches diameter depending on variety); outer wrapper leaves remain slightly looser
Stop heavy nitrogen feeding to prevent excessive leaf growth at expense of head density. Check for pest damage. Harvest when heads feel firm and dense when gently squeezed.
Harvest Ready
Variable; harvest window is 1-2 weeksCompact head with pale, crisp inner leaves visible at the base; outer leaves may show minor yellowing or damage from weather or pests
Harvest before temperatures consistently exceed 75°F or plant will bolt. Cut heads at soil level in early morning when crisp. Use immediately or refrigerate.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Row covers until flowering; Bacillus thuringiensis (Bt) spray; hand-picking; neem oil
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Row covers on young plants; kaolin clay spray; neem oil; diatomaceous earth
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Strong water spray; insecticidal soap; neem oil; natural predators like ladybugs
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Yellow sticky traps; insecticidal soap; reflective mulch; neem oil
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and
Hand-picking at night; beer traps; copper tape barriers; diatomaceous earth
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Row covers; Bt spray; spinosad; crop rotation
Uses
Fresh salads and raw preparations
CulinaryPe-tsai's mild flavor, tender texture, and crisp white midribs make it ideal for fresh salads, slaws, and Asian cuisine. The leaves remain sweet and juicy when eaten raw, and the contrast between the tender inner leaves and sturdy outer leaves provides textural interest. [source]
Stir-fries and Asian cooking
CulinaryA staple in East Asian cuisines, pe-tsai cooks quickly and absorbs flavors well in stir-fries, soups, and braised dishes. Its tender leaves wilt rapidly, making it perfect for last-minute additions to hot dishes without becoming mushy. [source]
Fermented dishes and kimchi
CulinaryPe-tsai is the traditional vegetable base for Korean kimchi and other fermented preparations. Its crisp texture and mild flavor provide an ideal foundation for fermentation, developing complex flavors while maintaining structural integrity. [source]
Nutritional and digestive support
MedicinalRich in vitamins C and K, dietary fiber, and glucosinolates (compounds studied for potential health benefits), pe-tsai supports digestive health and provides antioxidant benefits. The fiber content aids digestive regularity and supports gut health. [source]
Storage and winter availability
HouseholdPe-tsai stores exceptionally well in cool conditions (32-40°F with high humidity) for 2-3 months, providing fresh vegetables throughout winter. Proper storage allows gardeners to enjoy homegrown brassicas long after the growing season ends. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when heads are firm and compact, typically 45-80 days after planting depending on variety and conditions. Cut the entire head at the base with a sharp knife in the early morning when leaves are crisp. For a longer harvest, cut the outer 2-3 leaves from each plant and allow the center to continue growing. Pe-tsai deteriorates quickly in heat, so harvest before sustained temperatures exceed 75°F. Refrigerate immediately and use within 2-3 weeks for best quality.
Fun Facts
- 🌱 Pe-tsai was developed in China over 1,500 years ago through selective breeding of bok choy, combining the head-forming characteristics of cabbage with the tender leaves of Asian greens.
- 🌱 Unlike European cabbage varieties, pe-tsai rarely produces the sulfurous compounds that make cooked cabbage smell strong, resulting in a milder, more pleasant aroma when cooked.
- 🌱 Pe-tsai can be grown as a fall crop even in very short-season climates by starting seeds indoors in midsummer and transplanting when seedlings are 4-6 weeks old, harvesting before first frost.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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