Table of Contents
Plant Care Guide: Onion – Australian Brown
Onion ‘Australian Brown’ is a hardy, long-storing variety with a strong flavour and golden-brown skin. It thrives in well-drained soil and is perfect for both home gardens and commercial growing.
Planting
- Best Time to Plant: Sow seeds in autumn and winter when temperatures are between 10-20°C.
- Soil Preparation: Prefers well-drained, fertile soil with a pH of 6.0-7.5, enriched with compost.
- Spacing: Sow seeds 1 cm deep and 5-10 cm apart in rows spaced 30 cm apart.
- Sunlight: Requires full sun for optimal bulb development.
- Watering: Water regularly, keeping soil evenly moist but not waterlogged.
Care & Maintenance
- Support: Not required, as onions grow well without staking.
- Fertilising: Apply a balanced fertiliser at planting and side-dress with compost as needed.
- Weeding: Keep the area weed-free to prevent competition for nutrients.
- Mulching: Use mulch to retain moisture and suppress weeds.
Pests & Diseases
- Common Pests: Thrips and onion maggots can be a problem. Use insect netting or companion planting to deter pests.
- Common Diseases: Downy mildew and white rot can occur in humid conditions. Ensure good airflow and avoid excessive watering.
Companion Planting
- Good Companions: Carrots, beetroot, and lettuce help deter pests and improve growth.
- Avoid Planting Near: Beans and peas, as they can inhibit onion growth.
Harvesting
- When to Harvest: Ready in 100-120 days when tops start to yellow and fall over.
- How to Harvest: Gently lift bulbs from the soil and allow them to dry in a warm, well-ventilated area.
- Storage: Store cured onions in a cool, dry place for several months.
Bonus Tip
For sweeter onions, reduce watering in the last few weeks before harvest.
Happy gardening! 🌱
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