Ruqayyah Snyder
Onions are a great crop to grow in Australia, as they can be easily grown in most parts of the country and stored for many months. In this article, we will explore the best locations and conditions for growing onions in Australia, as well as provide tips on planting, care, and harvesting techniques to ensure a successful onion crop. With the right knowledge and care, anyone can enjoy the superior taste of homegrown onions.
| Characteristics | Values |
|---|---|
| Best time to plant | In warm northern areas of Australia, onions may be sown from February to May. In Sydney, onions may be sown from March to May or for mid-season varieties, sow in June or July. In the cold southern areas, onions can be sown progressively from April to September. In southern Australia, the time to plant is between March and June, with harvest occurring around October to December. Autumn is the best time to start planting onion seeds or seedlings, particularly in warmer areas. |
| Soil type | Well-drained soil with a soil temperature between 8°C and 30°C. |
| Spacing | Plant the seedlings about 10-15 cm apart in rows 20 to 30 cm apart. |
| Watering | Keep the soil moist while the onions are growing. As the days begin to warm up and the bulb starts to form, reduce watering as the bulbs tend to rot if too wet. |
| Harvesting | Harvest in 25-34 weeks or when the leaves have dried out and the plant easily pulls out of the ground. |
| Storing | Store in a cool, dry, dark, and well-ventilated place. |
| Pests | Lizards, thrips, and aphids. |
Explore related products
What You'll Learn
Best months for planting onion seeds in Australia
The best months for planting onion seeds in Australia depend on the region and the variety of onion. Onions are typically planted in Autumn in warmer areas of Australia because they require a long, cool growing season to develop properly. In Sydney, for example, onions may be sown from March to May, or for mid-season varieties, in June or July. In the northern areas of Australia, onions may be sown from February to May. In cold southern areas, onions can be sown progressively from April to September.
Onions can be bought as young plants (sets or seedlings) from garden shops/nurseries to plant straight into garden beds. It is important to choose the appropriate onion variety for your climate and the time of year, as some onions grow better in cooler months. Onion bulbs should sit on the surface of the soil and not be covered. They will take around six to eight months to mature.
Onion seeds can be sown in beds or punnets and transplanted when the seedlings are 10 cm or so high. They should be planted 10-15 cm apart in rows 20 to 30 cm apart. Alternatively, seeds may be sprinkled thinly into a narrow furrow, covered lightly, and watered gently. The seedlings should be allowed to gain strength before planting out, usually around four to six weeks. Onion seeds should be sown at a depth of approximately three times the diameter of the seed, and the soil temperature should be between 8°C and 30°C.
Onions are compatible with several other plants, including lemon balm, borage, carrots, beets, silverbeet, lettuce, and amaranth. They like a sweet soil of around 6.5 pH, high in organic matter but not overly rich. A bed prepared with aged sheep or cow manure is ideal. Onions also love a full sun position and grow above the ground, unlike garlic.
The Land Down Under: Australia's Top Ratings
You may want to see also
Explore related products
How to harvest and store onions
Onions are a great crop to grow in Australia as they store well and can be used over a long period. They can be grown in most areas, but it's important to select the right variety for your climate and the time of year. Onions prefer a sunny, open position with well-drained soil and regular watering. They can be sown in seed trays or directly into the ground, and they take around six to eight months to mature.
You'll know onions are ready to harvest when the tops start to dry and turn yellow, falling over. To harvest, gently lift the bulbs with a fork and leave them on the ground for a few days to dry. If the weather is wet or humid, move them to a dry, airy place like a shed. Once dried, rub off any roots, dirt, and old leaves.
Onions should always be stored in a cool, dry, and well-ventilated place. You can hang them in plaits, or use mesh bags or wire baskets to ensure good air movement and reduce the chance of rot. With proper storage, you can expect to enjoy your onion harvest well into winter.
To protect your onion crop from pests, you can try natural methods like spraying with vinegar or covering plants with wire bird netting. Alternatively, small insects like thrips and aphids can be controlled with a garden insecticide.
American Eagle Shipping: Australia Availability
You may want to see also
Explore related products
Different types of onions grown in Australia
Onions are a staple in most kitchens and are used in a variety of dishes. They come in a range of colours, shapes, and sizes, and there are many onion varieties grown in Australia. The best time to plant onions differs according to the region and climate. In the warm northern areas of Australia, early onions may be sown from February to May. In Sydney, onions may be sown from March to May, or for mid-season varieties, sow in June or July. In the cold southern areas, onions can be sown progressively from April to September.
Onions prefer to grow in a sunny, open position with well-drained soil. They should be planted 10-15cm apart in rows 20 to 30cm apart. Onion bulbs should sit on the surface of the soil and not be covered. They will take six to eight months to mature. Onions are ready to harvest when the tops start to dry and fall over. They should be pulled and left to dry for a few days before storing in a cool, dry, airy place.
Some of the different types of onions grown in Australia include the 'Early Barletta', which can be lifted at 70 days for pickling or left to mature as a salad onion. The 'Hunter River White' is another early variety. The 'Sweet Red' is a mid-season variety that stores reasonably well. The 'Brown Spanish' variety keeps very well and may be planted late. The 'Borettana Yellow' is a late variety that can be pickled or used as a salad onion.
Other types of onions grown in Australia include the 'Spring Onion' and the 'Shallot Bunching Onion', which can be sown directly from spring through to autumn. These onions do not usually need to be thinned out and can be harvested from eight to twelve weeks. For a continuous supply, sow more seeds every four weeks.
Thresher Sharks in Australia: Where and When to Spot Them
You may want to see also
Explore related products
Pest control for onions
Onions are not prone to many of the pest and disease problems that commonly occur in vegetable gardens. In fact, onions (like garlic) act as a natural pest repellent. Deer, mice, and voles will not trouble your onions, and their sulphur content is offensive to many insect pests.
However, there are some pests and diseases that can affect onions. One of the most common is onion fly, which affects onions, shallots, leeks, garlic, chives, Japanese bunching onions, and Welsh onions. The adults are similar in appearance to a domestic fly, and the larvae are white maggots that damage bulbs, leaves, roots, and seedlings. Another pest is the bean fly, which affects onions, leeks, garlic, Brassicaceae species, tomatoes, potatoes, and corn.
Some other pests and diseases that can affect onions include:
- Fusarium basal rot, which damages leaves and the whole plant. It appears as a pinkish-brown rot covered with a whitish, fluffy fungal growth.
- A fungus that attacks the roots of young plants, causing rotted root tips and cortex. It is found in South Australia, Western Australia, and Tasmania.
- Bulb eelworm, which affects a broad range of plants, including Allium species, cereal crops, ornamental bulbs, and potatoes. It damages roots and vegetative organs, and penetration of onion leaves causes leaf deformation and swellings.
- White rot, a soil fungal disease that can be spread by people, vehicles, and machinery. It is difficult to control because it can survive in the soil for many years.
- Onion smut, which was detected in South Australia in 1979 and has since been eradicated. However, ongoing surveillance is required to ensure it does not return.
To control pests and diseases in onions, there are several measures that can be taken:
- Rotate your onion-bed location every year and clean up all fall debris before winter to prevent the overwintering of pests and diseases.
- Implement on-farm biosecurity measures to prevent the entry and spread of pests and diseases, such as onion smut and white rot.
- Choose the appropriate onion variety for your climatic zone and plant at the right time of the season to avoid bolting.
- Use companion plants such as lemon balm, borage, carrots, beets, silverbeet, lettuce, and amaranth, which can help repel pests.
- Try natural repellents such as vinegar to deter pests like lizards, or provide a dedicated feeding spot for them away from your plants.
- Cover plants with wire bird netting to protect them from pests while still allowing them to grow.
A Ship Ride: England to Australia
You may want to see also
Explore related products
Soil type and spacing for growing onions
Onions are a versatile crop that can be grown in most areas of Australia, provided you select the right variety for your climate zone and day length. They are a good winter crop, and in southern Australia, they are typically planted between March and June, with a harvest season from October to December. In warm northern areas, onions may be sown from February to May, and in Sydney from March to July. In cold southern areas, onions can be sown progressively from April to September.
Onions prefer a sunny, open position with well-drained, nutrient-rich soil of around 6.5 pH, that is high in organic matter but not overly rich. A bed prepared with aged sheep or cow manure is ideal. They also grow well in raised beds, which can enhance drainage if your soil is heavy clay or poorly drained. Onions like friable soil so they can lay down roots quickly.
The planting depth varies depending on the method: seeds should be sown 1/4 to 1/2 an inch deep, sets around 1 inch deep, and transplants should be placed so that the roots are well-covered and the top of the bulb is just below the soil surface. The recommended spacing for onions is 12-18 inches between rows and 4-6 inches between seeds or sets within the row. Seeds can also be sprinkled thinly into a narrow furrow, covered lightly, and gently watered. They will emerge in around two weeks and should be thinned.
Onions require regular care, including watering, fertilising, and mulching. Water onions regularly to keep the soil evenly moist, but reduce watering as the bulb starts to form, as they tend to rot if too wet. Avoid wetting the foliage, as this can lead to disease. Fertilise when planting and again when the bulbs begin to swell, using a balanced fertiliser or one higher in phosphorus to support bulb development. Applying a layer of mulch can help retain soil moisture, suppress weeds, and regulate temperature, but keep mulch away from the base of the plant to avoid the bulb rotting.
Lucrative Side Hustles for Australian Med Students
You may want to see also
Frequently asked questions
Autumn is the best time to start planting onion seeds or seedlings, especially in warmer areas because onions require a lengthy cool growing season to develop properly.
Onions typically take between 100 and 120 days to mature, depending on the variety.
Onions can be grown from either seeds or seedlings. To grow onions from seeds, fill a glass jar halfway with sand, add your seeds, and mix. The sand aids in drainage. Then, fill the jar with dolomite lime to sweeten the soil.
Onions should be planted in a sunny, open location with well-drained soil. To avoid overcrowding, space the plants out. Keep weeds at bay and water on a regular basis to keep the soil moist.
Onions are susceptible to pests such as lizards and insects like thrips and aphids. They are also vulnerable to fungus diseases like moulds and mildews.
