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Bok Choy Purple Flowering

Brassica rapa subsp. chinensis

vegetable

Purple Flowering Bok Choy is a dramatic Asian leafy green featuring dark purple stems and green leaves with white veining. This tender brassica grows rapidly and can be harvested at baby or mature stages. It's prized for its tender texture, mild flavor, and stunning visual appeal in both the garden and kitchen.

Growing Conditions

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Sun: Full sun to partial shade, 4-6 hours of direct sunlight daily
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Water: Consistent moisture; keep soil evenly moist (1-1.5 inches per week). Avoid waterlogging. More frequent watering needed in hot weather to prevent bolting.
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Spacing: 6 inches
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Days to maturity: 45-60 days (60-75 days for full-sized plants)
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Planting depth: 0.25-0.5 inches

Soil

Type: Well-draining, rich loamy soil with high organic matter
pH: 6.0-7.5
Amendments:
Compost aged manure peat moss balanced NPK fertilizer

Growing Zones

Find your zone β†’

Thrives in zones 3-9; prefers cool to moderate seasons

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

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Growth Stages

1

Seedling

7-10 days

True leaves emerge from cotyledons; plant develops 2-4 true leaves

Keep soil consistently moist. Thin seedlings to proper spacing when 1-2 inches tall. Provide 12-14 hours of light daily if growing indoors.

2

Vegetative Growth

20-30 days

Rapid leaf and stem development; purple coloring intensifies in stems; plant forms rosette

Maintain consistent moisture and cool temperatures (60-70Β°F ideal). Fertilize with balanced fertilizer every 2-3 weeks. Thin to final spacing if needed.

3

Leafing Stage

15-20 days

Full rosette formation with multiple leaves; stems thicken and develop deep purple color

Monitor for pests weekly. Maintain even soil moisture. Begin harvesting outer leaves if desired for baby greens.

4

Maturity

Ready to harvest

Plant reaches full size (8-12 inches tall) with dense rosette of purple-stemmed leaves; plant may begin to bolt if stressed

Harvest promptly to prevent bolting. Reduce watering slightly if weather warms. Provide afternoon shade in hot climates.

5

Flowering/Bolting

Varies; triggered by heat or maturity

Plant sends up flower buds and tall central stalk with small yellow flowers if left unharvested or stressed by heat

Harvest before this stage for best eating quality. If allowing to flower for seeds, support tall stems.

Companion Planting

Plan your garden β†’

Plant with:

Celery Garlic Onions Beets Carrots Dill Chamomile Thyme Lettuce Spinach

Avoid planting near:

Tomatoes Peppers Pole beans Fennel Mustard Other brassicas (to reduce pest and disease pressure)

Common Pests

  • Use row covers on young plants. Handpick larvae. Apply Bacillus thuringiensis (Bt) if needed. Plant marigolds nearby.

  • Use row covers early in season. Spray neem oil or spinosad. Keep plants well-watered to reduce stress.

  • Spray with strong water jet to dislodge. Use insecticidal soap. Encourage beneficial insects like ladybugs.

  • Use yellow sticky traps. Spray neem oil on leaf undersides. Ensure good air circulation.

  • Use floating row covers to prevent adult flies from laying eggs. Remove affected plants immediately.

  • and

    Hand-pick in early morning or evening. Use copper tape barriers. Create slug traps with beer or citrus peels.

Uses

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Stir-fries & Asian cooking

Culinary

Purple Flowering Bok Choy is ideal for quick stir-fries, where its tender stems and mild flavor shine. Both leaves and stems are edible and cook quickly, maintaining their purple color and tender texture. [source]

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Raw salads & fresh preparations

Culinary

Young leaves and thin purple stems can be eaten raw in salads, offering a mild, slightly sweet flavor with beautiful visual appeal. Baby bok choy is particularly tender for raw consumption. [source]

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Soups & braising

Culinary

The tender leaves wilt beautifully in soups and broth-based dishes, while the thicker stems can be braised as a vegetable side. Its mild flavor complements Asian broths and Western soups equally well. [source]

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Nutritional & antioxidant benefits

Medicinal

Bok choy is rich in vitamins A, C, and K, plus calcium and antioxidants including glucosinolates. These compounds support immune function and may have anti-cancer properties. [source]

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Ornamental garden plant

Household

The striking purple stems and contrasting green leaves make Purple Flowering Bok Choy visually appealing in vegetable gardens, raised beds, and even ornamental containers, combining beauty with function. [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 4-6 inches tall for tender baby bok choy (30-40 days), or wait 45-60 days for full-sized mature plants. Cut outer leaves individually starting from the base, or harvest entire plant by cutting 1 inch above soil level. Morning harvest yields crispest leaves. Harvest before bolting occurs (plant sends up flower stalk), which happens when temperatures exceed 75Β°F or plant matures. Purple Flowering variety is especially tender when harvested young.

Fun Facts

  • 🌱 The purple coloring in the stems is due to anthocyanin pigments, the same compounds that make blueberries and red cabbage nutritious and colorful.
  • 🌱 Bok Choy is not actually a cabbage despite being a brassicaβ€”it forms loose rosettes of leaves rather than tight heads, which is why it cooks so quickly.
  • 🌱 This vegetable has been cultivated in China for over 6,000 years and remains a staple in Asian cuisine, though it has only become widely popular in Western gardens in the last 30-40 years.

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