How to Grow Bok Choy Shanghai

Bok Choy Shanghai

Brassica rapa subsp. chinensis

vegetable

Bok Choy Shanghai is a compact, tender Asian green with thick white or pale green stems and dark green leaves. This fast-growing variety is prized for its mild, slightly sweet flavor and crisp texture, making it ideal for stir-fries, soups, and fresh preparations.

Growing Conditions

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Sun: Full sun to partial shade; 6+ hours of direct sunlight daily

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Water: Keep soil consistently moist but not waterlogged; provide 1-1.5 inches per week through rainfall or irrigation. Inconsistent watering causes bolting and bitterness.

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Spacing: 6-8 inches

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Days to maturity: 45-60

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Planting depth: 0.25-0.5 inches

Soil

Type: Well-draining loamy soil rich in organic matter

pH: 6.0-7.5

Amendments:

compost aged manure peat moss balanced fertilizer (10-10-10)

Growing Zones

Find your zone →

Cool-season crop thriving in zones 2-10; best in spring and fall

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a

Growth Stages

Germination

5-10 days

Tiny seedlings emerge with cotyledons (seed leaves) appearing within 5-10 days

Keep soil warm (70-75°F) and moist but not saturated. Provide bright light once sprouted.

Seedling

2-3 weeks

First true leaves develop; plants are 1-2 inches tall with 2-3 sets of leaves

Thin seedlings to proper spacing if direct seeded. Water gently to avoid damping off. Maintain 65-70°F.

Vegetative Growth

3-4 weeks

Rapid stem and leaf expansion; white or pale green petioles (stems) thicken while leaf rosette widens

Water consistently and deeply. Apply balanced fertilizer every 2-3 weeks. Ensure adequate spacing for air circulation.

Heading

1-2 weeks

Stems reach full thickness and height; leaves form a tight head-like cluster at harvest maturity

Monitor for bolting in warm weather. Maintain consistent moisture. Watch for pest damage.

Harvest

Ongoing

Plants are 6-8 inches tall with thick white stems and dark green, tender leaves ready for cutting

Harvest in early morning for crispness. Cut at soil level or pick outer leaves for continuous harvest.

Companion Planting

Plan your garden →

Plant with:

basil beet carrot cucumber dill garlic onion pea radish spinach

Avoid planting near:

broccoli cabbage cauliflower kale kohlrabi mustard turnip

Common Pests

Hand-pick caterpillars; use row covers; spray with Bacillus thuringiensis (Bt); neem oil for severe infestations
Use row covers; spray insecticidal soap; diatomaceous earth; maintain plant vigor with consistent watering
Spray strong water jet to dislodge; insecticidal soap; neem oil; encourage natural predators like ladybugs
Yellow sticky traps; insecticidal soap; neem oil; reflective mulches
Avoid planting other brassicas in same location; improve drainage; lime acidic soils; remove infected plants immediately
Improve air circulation; avoid overhead watering; remove affected leaves; copper fungicide if severe

Uses

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Stir-fries & Quick Cooking

Culinary

Bok Choy Shanghai's tender stems and leaves cook quickly in just 2-3 minutes, making it perfect for stir-fries, sautés, and Asian noodle dishes. The mild flavor complements garlic, ginger, and soy-based sauces beautifully. [source]

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Fresh Salads & Raw Use

Culinary

Young bok choy leaves are tender and slightly sweet, ideal for fresh salads, slaws, and spring rolls. The crisp white stems add satisfying texture to raw preparations. [source]

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Nutritional Dense Greens

Medicinal

Bok choy is rich in vitamins A, C, and K, plus calcium, iron, and antioxidants. Traditional Asian medicine values it for supporting bone health and boosting immunity. [source]

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Soups & Broths

Culinary

Whole bok choy plants or chopped leaves add body and nutrition to Asian soups, broths, and hot pot dishes. They absorb flavors while maintaining their delicate texture. [source]

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Quick Harvests for Urban Gardens

Household

Fast 45-60 day maturity and compact size make Shanghai bok choy ideal for container gardening, small spaces, and succession planting for continuous harvests. [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 plants are 6-8 inches tall and stems are tender and crisp, typically 45-60 days from planting. Cut the entire plant at soil level with a sharp knife, or harvest outer leaves individually for continuous production. Morning harvest yields maximum crispness. Use immediately or store in refrigerator (up to 1 week). Shanghai varieties are best harvested young before stems become too thick and fibrous.

Fun Facts

🌱 Bok choy has been cultivated in China for over 6,000 years and was originally domesticated from wild mustard plants.
🌱 Shanghai bok choy is a relatively modern variety, developed in the 20th century specifically for tender stems and compact heads suitable for dense urban gardens.
🌱 Unlike some brassicas, bok choy rarely bolts in cool weather and can even be grown as a winter crop in mild climates, extending the harvest season.

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