When to Plant Mizuna in Brisbane — Subtropical Guide

Mizuna

Photo: Wikimedia Commons

Mizuna is a fast-growing Japanese mustard green with distinctive feathery, serrated leaves and a mild, slightly peppery flavour. It is one of the easiest and fastest Asian greens to grow, ready to harvest as baby leaf in 3-4 weeks. More bolt-resistant than many Asian greens, it can be grown year-round in most Australian zones with successive sowings.

Current Growing Conditions

Soil temperature: 23.6°C (optimal range: 10–30°C) ✓ Ready to plant

How to Grow Mizuna in Subtropical Australia

When to Plant

Year-round with shade in summer. Best March-October. Summer growing possible in part shade with frequent harvesting.

Soil
Well-drained, fertile soil enriched with compost. Not fussy about soil type but performs best in loose, moisture-retentive ground.
pH Range
6.0-7.5
Sunlight
Full sun in cool weather. Part shade (afternoon) in warm weather to prevent bolting and bitterness.
Spacing
25cm apart, 30cm between rows
Watering
Keep consistently moist. Light, frequent watering suits shallow roots. Drought stress triggers bolting and bitterness. Drip or soaker hose ideal.

Companion plants: Lettuce, Radish, Carrot, Peas, Beans

Avoid planting near: Other brassicas if disease is present

Subtropical Growing Tips for Mizuna

Recommended Varieties

  • Standard green mizuna
  • Purple mizuna
  • Mibuna (round-leaf relative)

Key Challenges

  • Bolts in summer heat if not shaded
  • Flea beetles in warm months

Pro Tips

  • Excellent year-round salad green for SEQ with correct timing
  • Grow in the shade of taller crops during summer
  • Harvest baby leaves from 3 weeks for salads

Harvesting Mizuna

When ready: Baby leaf: 10-15cm tall (3-4 weeks). Full size: 30-40cm (5-7 weeks). Leaves should be bright green, fresh, and tender.

How to harvest: Cut-and-come-again: cut leaves 3cm above ground level and they will regrow 2-3 times. Or harvest individual outer leaves. Or pull entire plant for one large harvest.

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