Mustard Osaka Purple Vegetable Seeds

MUSTARD ‘Osaka Purple’ Vegetable Seeds

Botanical Name: Brassica juncea

• Traditional Japanese mustard green with deeply serrated purple and green leaves.
• Mild spicy flavour that becomes stronger as leaves mature.
• Fast-growing leafy vegetable suitable for salads, stir-fries, soups, and pickling.
• Excellent for baby leaf production, kitchen gardens, raised beds, and containers.
• Non-GMO, open-pollinated, untreated seed suitable for organic growing.

Plant Details

• Plant Type: Cool-season annual leafy vegetable
• Height: 25–45 cm
• Position: Full sun to part shade
• Life Cycle: Annual

Sowing Information

• Germination: 4–10 days
• Sowing Depth: 5 mm
• Plant Spacing: 20–30 cm
• Row Spacing: 30–40 cm
• Soil: Well-drained fertile soil enriched with compost or organic matter
• Position: Full sun during cooler months or part shade in warmer climates

Growing Tips

• Sow directly into the garden or raise seedlings in trays before transplanting.
• Keep soil consistently moist during germination and early growth.
• Apply mulch around plants to retain moisture and suppress weeds.
• Harvest outer leaves regularly to encourage continuous production.
• Cool weather improves leaf colour and produces a milder flavour.
• Protect young plants from cabbage moth and slugs where necessary.

Harvest

Baby leaves can be harvested from 20–30 days after sowing. Mature leaves are usually ready within 40–60 days. Pick leaves regularly for ongoing production.

When to Sow Osaka Purple Mustard in Your Climate