How to Grow Hong Kong Green

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Hong Kong Green

Brassica rapa subsp. chinensis

vegetable

Hong Kong Green is a fast-growing Asian leafy green that forms loose bunches of tender, dark green leaves with thick white or pale green stems. It's a popular variety of Chinese cabbage or bok choy prized for its mild, slightly sweet flavor and rapid maturity. Both leaves and stems are edible and commonly used in stir-fries, soups, and fresh preparations.

When should you plant Hong Kong Green in your zone?

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Example Hong Kong Green timeline · Pittsburgh, PA (Zone 6b)

Plant Hong Kong Green
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Hong Kong Green
Around Jun 1

≈ 45 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Hong Kong Green dates for your own zip code.

Growing Conditions

☀️

Sun: Full sun to partial shade; 6+ hours of sunlight daily (afternoon shade in hot climates)

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Water: Consistent moisture; water deeply 1-2 times weekly. Keep soil evenly moist but not waterlogged. More frequent watering needed during hot, dry periods.

📏

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, fertile loamy soil rich in organic matter

pH: 6.0-7.5

Amendments:

Compost aged manure balanced organic fertilizer

Growing Zones

Find your zone →

Thrives in zones 4-10; can be grown as a cool-season crop in warmer regions

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

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Growth Stages

Seedling

7-10 days

Tiny seed leaves emerge, followed by first true leaves with slight serration. Plant is very delicate.

Keep soil consistently moist. Provide gentle air circulation. Thin seedlings to proper spacing early to prevent crowding and disease.

Vegetative Growth

20-35 days

Rapid expansion of leaf rosette. Thick white or pale stems develop. Plant remains low-growing.

Maintain consistent watering and fertility. Apply balanced fertilizer every 2-3 weeks. Monitor for pests and diseases.

Mature/Harvest-Ready

5-10 days (harvest window)

Full-sized rosette with 6-12 dark green leaves and well-developed thick stems. Plant reaches 8-12 inches tall.

Ready to harvest at this stage. Can continue harvesting outer leaves while plant remains in ground for extended harvest.

Companion Planting

Plan your garden →

Plant with:

Carrots Beets Radishes Beans Peas Cilantro Dill Chamomile Mint

Avoid planting near:

Cabbage Broccoli Cauliflower Kale other Brassicas (to reduce pest/disease pressure)

Common Pests

Use row covers, hand-pick, spray with Bt (Bacillus thuringiensis), or neem oil
Spray with water to dislodge, use insecticidal soap, neem oil, or encourage beneficial insects
Use row covers, diatomaceous earth, neem oil, or insecticidal soap
Yellow sticky traps, insecticidal soap, neem oil, reflective mulch
and
Hand-pick, beer traps, copper tape, diatomaceous earth, encourage predators

Uses

🍳

Asian Stir-fries & Soups

Culinary

Hong Kong Green is a staple in Asian cuisine, particularly Chinese and Southeast Asian cooking. Its tender leaves and crunchy stems remain firm during quick cooking and absorb flavors well in stir-fries, soups, and noodle dishes. [source]

🍳

Fresh Salads & Raw Preparation

Culinary

Young, tender leaves and stems can be eaten raw in salads, providing a mild, slightly sweet flavor with a pleasant crunch. Less bitter than many other Asian greens. [source]

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Nutritional & Anti-inflammatory Benefits

Medicinal

Hong Kong Green is rich in vitamins A, C, and K, calcium, and glucosinolates (sulfur compounds with potential anti-cancer properties). Traditional Chinese medicine uses it to support digestion and wellness. [source]

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Juice & Smoothie Ingredient

Household

The mild flavor and tender leaves make it excellent for juicing and adding to green smoothies for a nutritious boost without overpowering bitterness. [source]

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Pollinator & Beneficial Insect Support

Wildlife

If allowed to flower, Hong Kong Green produces small yellow flowers that attract pollinators and beneficial insects. The flowers are also edible and can be used as a garnish. [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 reach 8-12 inches tall (45-60 days from planting), typically 8-12 weeks after sowing. Harvest entire plant by cutting at soil level with a sharp knife, or harvest outer leaves individually while allowing inner leaves to continue growing. Morning harvest yields crispest leaves. Can be stored in refrigerator for 5-7 days in plastic bags.

Fun Facts

🌱 Hong Kong Green is one of the fastest-maturing Asian greens, making it ideal for succession planting and multiple harvests throughout the growing season.
🌱 Unlike many Brassicas, Hong Kong Green can tolerate heat better than traditional bok choy varieties and is well-suited to spring and fall plantings in most climates.
🌱 The entire plant is edible—leaves, stems, and even young flower buds if allowed to bolt—making it a highly efficient crop for home gardeners.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Full Sun Partial Shade True Leaves

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