When to Plant Cabbage in Cairns — Tropical Guide
Photo: Wikimedia Commons
Cabbage is a cool-season brassica staple available in green, red, savoy, and conical forms. It grows well across all Australian climate zones when planted in the correct season. A heavy feeder that rewards good soil preparation with dense, satisfying heads for slaws, stir-fries, fermenting, and traditional cooking.
Current Growing Conditions
Soil temperature: 25.2°C (optimal range: 5–30°C) ✓ Ready to plant
How to Grow Cabbage in Tropical Australia
When to Plant
Autumn-winter only (March-July). Too hot and humid for summer growing. Choose fast-maturing varieties (10-12 weeks).
- Soil
- Rich, firm, well-drained soil with heavy compost and aged manure. Cabbage needs solid soil structure for head formation; loose sandy soils produce loose heads.
- pH Range
- 6.0-7.5
- Sunlight
- Full sun (6-8 hours minimum). Part shade tolerated in subtropical/tropical zones.
- Spacing
- 50cm apart, 60cm between rows
- Watering
- Deep, consistent watering 2-3 times per week. Inconsistent watering causes split heads. Drip irrigation ideal. Avoid overhead watering to reduce disease. Reduce water as heads firm up to prevent split
Companion plants: Celery, Dill, Onion, Chamomile, Thyme, Sage
Avoid planting near: Strawberry, Tomato, Other brassicas (disease transfer), Grape
Tropical Growing Tips for Cabbage
Recommended Varieties
- Sugarloaf (heat tolerant)
- K-K Cross (heat tolerant)
- Green Coronet
- Wong Bok (Chinese cabbage as alternative)
Key Challenges
- Extreme pest pressure (diamondback moth year-round)
- Humidity causes fungal diseases
- Head formation poor in high heat
Pro Tips
- Insect netting is non-negotiable in the tropics - without it, expect total crop loss to caterpillars
- Grow Sugarloaf types rather than drumhead; they tolerate warmth better
- Raise beds for drainage during late wet season
Harvesting Cabbage
When ready: Head is firm and solid when squeezed. Outer leaves may begin to yellow or flare outward. Head has reached expected size for variety. Drum-like sound when tapped.
How to harvest: Cut head at base with sharp knife, leaving 4-6 outer wrapper leaves. Leave stump in ground; it may produce small secondary heads. Harvest in cool of morning.
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