How to Grow Chinese Mustard Red Giant
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Chinese Mustard Red Giant
Brassica juncea var. rugosa
vegetableRed Giant is a large-leafed Asian mustard variety with deep red-purple leaves and a slightly peppery, mustard flavor. It grows quickly in cool seasons and is prized for salads, stir-fries, and braised greens. The attractive foliage makes it both a culinary and ornamental garden addition.
When should you plant Chinese Mustard Red Giant in your zone?
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Example Chinese Mustard Red Giant timeline · Pittsburgh, PA (Zone 6b)
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Plant Chinese Mustard Red Giant
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 Chinese Mustard Red Giant
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Chinese Mustard Red Giant dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Best in zones 4-8; can grow in zones 3-9 with proper timing
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Germination & Seedling
10-14 daysSeeds sprout in 5-10 days; seedlings emerge with oval cotyledons, followed by true leaves with red coloration beginning to show.
Keep soil consistently moist but not waterlogged. Provide bright light to prevent leggy growth. Thin seedlings to proper spacing once they have 2-3 true leaves.
Vegetative Growth
20-35 daysRosette of deeply lobed, dark red-purple leaves expands rapidly. Plants develop a stocky base with multiple leaves radiating outward.
Maintain consistent watering and cool temperatures (55-70°F ideal). Fertilize every 2-3 weeks with balanced or nitrogen-rich fertilizer. Remove any yellowing outer leaves.
Mature Rosette
7-10 days at peak harvest qualityLarge, frilly-edged leaves with prominent red-purple coloration form a full, attractive rosette 12-18 inches in diameter. Leaves are tender and peak in flavor.
Begin selective harvesting of outer leaves. Keep soil consistently moist. Watch for bolting as temperatures warm; harvest before flower stalks develop for best flavor.
Flowering & Bolting
Variable; begins when temperatures consistently exceed 75°F or day length exceeds 14 hoursPlant sends up a central flower stalk with small yellow flowers. Leaves become tougher and more peppery/bitter as energy shifts to reproduction.
Harvest remaining greens before bolting occurs for best quality. In cool seasons, flowering can be delayed or prevented through consistent harvesting and cool temperatures.
Seed Production
30-40 days after floweringFlowers mature into long, thin seed pods (siliques). Seeds develop and dry inside pods, turning brown and hard.
Allow pods to mature fully on the plant if saving seeds. Leave unharvested plants in place until pods are dry and brown, then collect and dry further indoors.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Use floating row covers; apply Bacillus thuringiensis (Bt) spray if infestation occurs; hand-pick caterpillars
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Use row covers on young plants; spray with neem oil or insecticidal soap; encourage beneficial insects; dust with diatomaceous earth
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Spray with strong water spray; use neem oil or insecticidal soap; introduce ladybugs or lacewings
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Use yellow sticky traps; spray with neem oil or insecticidal soap; maintain good air circulation
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and
Hand-pick in early morning or evening; use copper tape around beds; apply beer traps; encourage ground beetles
Uses
Salads & fresh eating
CulinaryRed Giant mustard greens add peppery flavor and striking color to fresh salads, especially when harvested young as tender baby leaves. The leaves can be used raw in mixed greens or as a decorative salad base. [source]
Stir-fries & braised dishes
CulinaryMature leaves hold up well to heat and are commonly used in Asian cuisine for stir-fries, soups, and braised vegetable dishes. The slight bitterness intensifies with cooking but remains pleasant. [source]
Cruciferous vegetable nutrition
MedicinalLike all brassicas, Red Giant contains glucosinolates and other compounds studied for potential cancer-preventive properties. Rich in vitamins A, C, K, and minerals like calcium and iron. [source]
Garden ornamental
HouseholdThe deep red-purple foliage with frilly leaf margins makes Red Giant an attractive addition to ornamental vegetable gardens, edible landscapes, and container plantings. [source]
Pollinator & beneficial insect support
WildlifeWhen allowed to flower, Red Giant produces bright yellow blooms that attract bees and other pollinators. Flowers support beneficial insect populations in the garden. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Begin harvesting outer leaves when plant reaches 6-8 inches tall; pick leaves from outside moving inward, allowing inner leaves to continue growing. For baby greens, harvest at 20-30 days when leaves are 4-6 inches long. For mature greens, harvest entire plant by cutting at soil level or individual leaves for continuous harvest. Harvest in cool morning hours for crispest, mildest flavor. Do not harvest after temperatures exceed 75°F or plant becomes very bitter.
Fun Facts
- 🌱 Red Giant mustard is a favorite in Asian cuisines, particularly Chinese, Japanese, and Korean cooking, where it has been cultivated for thousands of years.
- 🌱 The red-purple color intensifies in cooler weather due to increased anthocyanin production, making fall harvests more brilliantly colored than spring crops.
- 🌱 Unlike true mustard (Sinapis alba), which produces tiny seeds used as a condiment, Brassica juncea produces abundant seeds that some gardeners save for replanting year to year.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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