Damon Mcknight
Growing garlic in Australia requires attention to soil quality, climate, fertilisation, and pest control. Soil contamination and quality are important considerations, as is the need for loose, well-drained soil enriched with organic matter and manure. Climate zones and microclimates influence the choice of garlic variety, with softneck garlic suited to warm temperate regions and hardneck garlic to cool-to-cold areas. Autumn is the ideal season to plant garlic, but care is needed to prevent bulbs from rotting. Regular watering, fertilisation, and weed management are crucial, and harvesting is determined by leaf colour, stem condition, and the number of remaining leaves.
| Characteristics | Values |
|---|---|
| Best time to plant | Autumn |
| Ideal soil pH | 6-7.5 |
| Soil type | Loose, well-drained, moist, full of organic matter and manure |
| Sunlight | Full sun to part shade |
| Location | Receives at least 6 hours of full sun each day |
| Planting method | Individual cloves, pointy end upward, in holes 3-5cm deep and 7-12cm apart |
| Row spacing | 10-15cm apart |
| Watering | Regularly, especially in spring |
| Fertilizer | Liquid fertiliser of seaweed or fish emulsion |
| Harvest time | When there are 4-5 green leaves left or when stems become soft and wilted at the base |
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What You'll Learn
Autumn is the best time to plant garlic
Garlic is a cool-season crop that is typically grown from autumn to summer. As such, autumn is the best time to plant garlic. If you live in a temperate or cool climate in Australia, from Tasmania to Southern Queensland, autumn is the time to start growing garlic.
To plant garlic, separate the bulbs into individual cloves and select the biggest and plumpest cloves for planting. Prepare the soil by adding organic matter and manure a few weeks before planting and ensure that the soil is loose, well-drained, and free of weeds. Plant the cloves pointy-end-up, 3-5 cm deep and 7-12 cm apart, with rows spaced 15-20 cm apart. Water the soil and mulch with straw or sugarcane to a depth of 7-10 cm.
Keep the soil moist, especially during the growing season in spring, but be careful not to overwater as this can cause the bulbs to rot. Liquid feeding with a good organic fertiliser and seaweed solution will promote healthy bulb development.
Garlic needs the transition from short days (winter) to long days (summer) to form bulbs, so planting in autumn gives the crop time to develop before summer. Autumn-planted garlic will continue to develop for around six months, and you can harvest it when there are 4-5 green leaves left or when the stems become soft and wilted at the base.
By planting in autumn, you can also avoid the risk of bulbs rotting, which can happen if you plant too early. Additionally, autumn planting allows enough time for the protective skins to develop around the bulbs, which is essential for good storage.
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Garlic needs loose, well-drained soil
When growing garlic, it is important to ensure that the soil is loose and well-drained. This is because garlic is grown from autumn to summer, and during this time, the soil tends to be quite damp. If the soil does not drain well, the bulbs may rot before they have a chance to send up shoots.
To prepare the soil for planting garlic, start by weeding the area thoroughly and digging the soil to at least a spade's depth to loosen it. You can then add organic matter and manure to the soil a few weeks before planting. It is important to use aged animal manure or compost and go easy on fresh manure or nitrogen-heavy fertilisers, as these can lead to soft foliage growth that attracts aphids and may cause bulbs to rot. If your soil is on the heavier side, you can lighten it by adding organic matter, which will help the garlic roots grow freely.
In addition to ensuring your soil is loose and well-drained, it is also important to maintain good drainage throughout the growing season. This can be achieved by mounding the soil into rows or planting in raised beds. Keep the area free of weeds, as alliums do not like competition.
Finally, when harvesting garlic, the method you use will depend on the type of soil you have. If you have planted your garlic in light soil, you can simply pull the bulbs out of the ground. However, if your soil is heavier or you have planted the bulbs more deeply, use a fork to carefully lift them out.
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Prepare the soil with organic matter and manure
Preparing the soil with organic matter and manure is crucial for growing garlic successfully in Australia. The addition of organic matter and manure improves soil health and fertility, leading to robust garlic plants.
When preparing the soil, it is essential to add organic matter such as compost, aged manure, or chicken manure. These organic amendments increase the nutrient content of the soil, promoting healthy plant growth. Garlic has specific nutrient requirements, particularly nitrogen, which is essential for forming stems. Chicken manure is an excellent organic source of nitrogen, enhancing garlic flavour and bulb formation. However, it is important to use fresh manure sparingly, as an excess of nitrogen can lead to soft foliage growth that attracts aphids and potentially causes bulb rot.
To increase the organic matter in the soil, gardeners can utilise cover crops, such as buckwheat and cowpeas, which are grown and then worked back into the soil before planting garlic. This method requires planning, as it takes time for the cover crops to mature and break down. Alternatively, gardeners can simply add compost or composted manure to the planting area.
In addition to organic matter, it is beneficial to incorporate other organic materials like peat moss, alfalfa pellets, or waste canola. Understanding the dry matter content, nutrient content, and carbon-to-nitrogen ratio of these materials is crucial for calculating application rates and ensuring the optimal level of organic matter in the soil.
By preparing the soil with a diverse range of organic matter and manure, Australian gardeners can create ideal conditions for growing healthy and bountiful garlic crops.
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Plant individual cloves, 3-5cm deep and 7-12cm apart
When it comes to growing garlic in Australia, timing is crucial. While specific dates may vary slightly depending on the source, the general consensus is that the ideal time to plant garlic cloves is in autumn, specifically in March or April in most parts of the country. This timing allows the garlic to establish a strong root system before the winter dormancy period.
To ensure a healthy garlic crop, it is important to follow the guidelines for planting depth and spacing. Each individual clove should be planted 3-5 cm deep in the soil. This depth provides enough space for the clove to develop a sturdy root system while also allowing easy sprouting. Planting at the correct depth is essential for the cloves to have access to adequate moisture and nutrients in the soil.
In addition to depth, proper spacing between cloves is vital. When planting individual garlic cloves, maintain a distance of 7-12 cm between them. This spacing allows sufficient room for the cloves to grow and mature into healthy garlic bulbs. Proper spacing also ensures that the plants do not compete excessively for nutrients and water, resulting in better bulb development.
By adhering to these guidelines for planting depth and spacing, you can create optimal conditions for your garlic crop. This attention to detail will contribute to a successful harvest, providing you with a bountiful supply of delicious, fragrant garlic bulbs. With the right timing and planting techniques, growing garlic in Australia can be a rewarding and satisfying experience.
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Harvest when there are 4-5 green leaves left
Garlic is a rewarding crop to grow in Australia, especially in temperate or cool climates, from Tasmania to Southern Queensland. The best time to plant garlic is in autumn, as garlic grows from autumn to summer. However, it is important to ensure that the cloves are planted when they begin to show shoot development, as planting too early can cause the bulbs to rot.
Harvesting garlic at the right time is crucial, and one reliable indicator is to wait until there are 4-5 green leaves left on the plant. Each leaf above ground represents a layer of protective paper wrapped around the garlic bulb. Therefore, a plant with 10 green leaves will have 10 layers of bulb wrappers. By harvesting when there are 4-5 green leaves left, you ensure that the remaining leaves become the protective 'skins' needed for good storage.
Another sign that your garlic is ready to harvest is when the stems become soft and wilted at the base. Once you have harvested your garlic, use a fork or trowel to minimise damage to the bulb. Hang the harvested garlic in a dry position with good ventilation to allow the bulbs to 'harden' and the leaves to dry.
To extend the availability of fresh garlic, it is advisable to plant both an early variety, such as Italian Red, and a late variety, such as Silver Skin, which has a storage capacity of up to 9 months.
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Frequently asked questions
Autumn is the best time to grow garlic in Australia, from early autumn to summer.
Garlic is a cool-season crop that grows best in full sun to part shade. It is suitable for both cool and warm temperate regions.
Garlic grows best in loose, well-drained soil with a relatively high pH of between 6 and 7.5.
Prepare the soil by adding organic matter and manure a few weeks before planting. Keep the area free of weeds until planting.
You can harvest your garlic when there are 4-5 green leaves left, or when the stems become soft and wilted at the base.
