Bok Choy

Brassica rapa subsp. chinensis

vegetable

verifiedReviewed by the GreenScout Team

Bok choy is a fast-growing Asian brassica with tender green leaves and white stems that are harvested as a whole head or leaf-by-leaf. It matures in 45–60 days and thrives in cool seasons, making it ideal for spring and fall crops. The mild, slightly sweet flavor and tender texture make it popular in stir-fries and Asian cuisines.

Common Problems

Select the problem your Bok Choy is experiencing to get a treatment guide.

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Boltingchevron_right

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Yellow Leaveschevron_right

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Holes In Leaveschevron_right

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Wiltingchevron_right

Care Guide

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Light

Full sun to partial shade; 6–8 hours of direct sunlight daily. Light afternoon shade in hot climates prevents bolting. Insufficient light slows growth and reduces vigor.

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Water

Keep soil evenly moist, providing 1–1.5 inches per week. Water consistently to prevent stress and bolting. Drip irrigation works well. Avoid waterlogging, which causes root issues.

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Soil

Rich, well-draining soil with pH 6.0–7.5. Incorporate 2–3 inches of compost or aged manure before planting. Bok choy appreciates fertile soil for optimal growth and tender leaves.

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Fertiliser

Moderate feeder. Apply balanced fertilizer (10-10-10) every 3–4 weeks, or use compost mulch. Side-dress with nitrogen-rich compost to support leaf and stem development.

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Temperature

Prefers cool temperatures of 50–70°F (10–21°C). Grows quickly in spring and fall. Heat above 75°F triggers early bolting; cool seasons extend harvest windows.

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Humidity

Moderate humidity (50–70%) is beneficial. Good air circulation prevents fungal diseases and pest problems. Water early in the day to allow foliage to dry.

Toxicity

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Bok choy is completely safe and nutritious for all family members and pets.

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

How long until Bok Choy is ready to harvest?

It matures in just 45–60 days, making it one of the faster brassicas to grow — you can harvest the whole head at once or pick leaves individually as needed.

Why is my Bok Choy bolting in summer?

Heat above 75°F triggers early bolting — this cool-season crop grows best in spring and fall, and light afternoon shade in hot climates helps prevent it from flowering prematurely.