Growing Spuds Down Under: A Step-By-Step Guide

how to grow spuds in australia

If you're looking to grow spuds in Australia, you're in luck—potatoes are easy to grow and can be planted in multiple months of the year, depending on the region and weather. Before you get started, you'll need to choose a variety of potato to grow. Popular options in Australia include Sebago, Coliban, Kipfler, Royal Blue, and King Edward. Once you've selected your variety, it's time to prepare your soil. Potatoes grow best in loose, fertile, well-drained soil that is rich in organic matter and has a pH that is not alkaline. When it comes to planting, you'll want to start with seed potatoes that are certified to be disease-free. Expose your seed potatoes to light for about a week before planting to toughen them up and encourage the growth of shoots. Then, plant your seed potatoes about 10cm deep, 40cm apart in rows that are about 1m apart. As your potato plants grow, continue to add soil from either side of the row to create a loose mound for the potatoes to grow in. Keep your potatoes well-watered, and after about 120 days or 15-20 weeks, you'll be ready to harvest your spuds!

Characteristics Values
Best time to plant In Australia, potatoes can be grown throughout the year depending on the region and weather.
Soil type Potatoes grow in most soil types but crop best in loose, fertile, well-drained, and sunny soil.
Soil temperature 10°C to 30°C.
Soil preparation Prepare the soil by adding well-weathered animal manure in the autumn before planting, or vegetable and herb fertiliser prior to planting.
Soil pH Balanced, not alkaline.
Planting method Plant 10 cm deep, 40 cm apart in 1 m rows.
Seed potatoes Certified, disease-free, and virus-free.
Seed size About the size of a golf ball or a chicken egg.
Seed preparation Expose to light for about a week before planting to start shoots growing.
Watering Keep the soil evenly moist but not waterlogged. Water deeply whenever the top 2.5 cm of soil feels dry.
Mulching Apply a layer of organic mulch, such as straw or shredded leaves, around the plants to conserve moisture, suppress weeds, and maintain an even soil temperature.
Harvesting Harvest in 15-20 weeks. Dig carefully to avoid damaging the potatoes.
Storage Store in a cool, dark place.

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Soil preparation: well-drained, loose, fertile, and pH-balanced

Potatoes are not fussy when it comes to soil type, but they do have some preferences. They crop best in loose, fertile soil in full sun. Potatoes are often planted to assist in breaking up heavier loams. Before planting, prepare your soil by adding well-weathered animal manure in the autumn, or vegetable and herb fertiliser.

The soil should be rich and well-drained to prevent soggy spuds. Well-drained soil will also ensure your spuds don't get waterlogged. To achieve this, you can use a no-dig system, which involves layering newspapers or flattened cardboard boxes at least six layers thick in the area to be planted. Spread your seed potatoes on top, trying to get the shoots pointing upwards. Cover the potatoes with layers of compost, weed-free straw, rotted animal manure, and other mulch materials.

To conserve moisture, suppress weeds, and maintain an even soil temperature, apply a layer of organic mulch, such as straw or shredded leaves, around the potato plants. Keep the soil evenly moist but not waterlogged, as potatoes can rot. Water deeply whenever the top 2.5 cm of soil feels dry.

It is also important to check the soil pH and avoid alkaline soils to prevent potato scab. A bit of seaweed tea at planting and flowering time is beneficial.

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Seed potato selection: certified, disease-free, and sprouted

Seed potatoes are small potatoes that are usually dried up and wrinkled. They are often referred to as "seed" potatoes because they have formed ""eyes""", which are sprouts that will grow into new plants. These seed potatoes are typically purchased from local garden centres or online, as most grocery store-bought potatoes are treated to prevent sprouting.

When selecting seed potatoes, it is important to choose certified seed potatoes that are handpicked and screened to be disease-free. Certified seed potatoes are more likely to produce a good crop. They are free of viruses and other diseases, ensuring the health of your future crop.

Before planting, expose your seed potatoes to light for about a week to toughen them up and encourage sprouting. This process is called "chitting". Take care when handling sprouting potatoes as the sprouts are fragile and can break off. Chitting involves leaving seed potatoes in a cool, light, and frost-free environment. If you don't have time to chit the potatoes, they will still sprout underground, but it may take longer for the shoots to appear.

Seed potatoes should be about the size of a golf ball or a chicken egg. If you purchase larger seed potatoes, you can cut them down to the desired size, ensuring that each piece has at least two eyes. Let the cut surfaces dry overnight to develop a protective layer that minimises the risk of infection.

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Planting: 10 cm deep, 40 cm apart, in rows

When planting potatoes, there are a few key things to keep in mind to ensure optimal growth. Firstly, it is important to prepare the soil adequately. Potatoes grow in most soil types but crop best in loose, fertile, and well-drained soil. Before planting, prepare your soil by adding well-weathered animal manure or vegetable and herb fertiliser.

Secondly, the planting process itself is crucial. Plant your seed potatoes about 10 cm deep and 40 cm apart in rows about 1 metre apart. It is important to ensure that the seed potatoes are facing upwards, with the "'eyes'" pointing upwards. Cover the potatoes with soil, creating a loose mound for them to grow.

Additionally, spacing is essential for healthy growth. Space your potatoes about 40 cm apart in rows. This spacing allows the plants enough room to grow and access nutrients from the soil.

By following these planting instructions and providing adequate care, you can successfully grow potatoes and enjoy a bountiful harvest.

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Maintenance: consistent watering, mulching, and pest control

Potatoes need a regular supply of water throughout the growing season to ensure a bountiful harvest. The amount of water required depends on the climate. Generally, most vegetable plants need 1 inch of water per week. Potatoes like consistent moisture throughout the plant and tuber growth period, but they don't thrive in soggy or extremely dry soil, so watering is a delicate balance. If you have very sandy soil or live in an area experiencing an extremely hot or dry period, you can water a couple of times a week if the soil is drying out quickly. This is less of an issue as the potato plants grow bigger, as they help shade the soil, retaining moisture.

Mulching potatoes helps retain moisture and control weeds. Grass clippings are particularly beneficial as mulch for potatoes, as they keep out sunlight (preventing green potatoes) and provide nutrients like nitrogen, potassium, and phosphorus. You can also use hay or straw as mulch. When the shoots are strong enough, add another layer for extra moisture retention and weed control.

Potatoes are susceptible to various pests and viruses, including the zebra chip, which is transmitted by the tomato potato psyllid, and bacterial wilt, which can remain in the soil for five to six years after an outbreak. The zebra chip is present in Western Australia, while bacterial wilt is found in all states and territories except Tasmania. Other pests to look out for include aphids, which spread by flying and can be identified by their contrasting colour and the presence of ants. If you notice an aphid that causes more damage than normal or does not respond to typical management strategies, call the Exotic Plant Pest Hotline on 1800 084 881.

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Harvesting: after 120 days, 30 days post-flowering, or when leaves change colour

When it comes to harvesting your potatoes, there are a few things to consider. Firstly, it's important to wait until the right time to harvest, which can vary depending on a few factors. One common indicator is the number of days since planting. Typically, potatoes can be harvested around 120 days after planting or 30 days after flowering. This is when they are considered "new" or "chat" potatoes. If you prefer to harvest later-season spuds, you can wait until the plant's top foliage has died off, which usually occurs around four months after planting.

Another indicator for harvesting is the colour of the leaves. When the lower leaves start to change colour, it's a sign that the potatoes are ready for harvesting. At this stage, you can ferret around in the soil and collect the largest tubers, leaving the smaller ones to continue growing. This method of harvesting on a "meal-to-meal" basis ensures a constant supply of fresh potatoes.

To harvest your potatoes, use a careful digging method to avoid damaging them. You can use your hands or a small garden fork to gently loosen the soil around the plant and uncover the potatoes. If you're harvesting after the plant has died off, you may have to dig a little deeper to reach the potatoes.

Once you've harvested your potatoes, it's important to store them properly. Late-season spuds are best stored in the soil, but if you prefer to rip them all up at once, store them in a cool, dark place with the dirt still on them. Avoid exposing stored potatoes to light, as they will turn green and become unsafe to eat.

It's worth noting that potatoes can be left in the ground for an extended period without rotting. This allows for a longer harvesting period, as you can dig up potatoes as needed. However, if you want to plant something else in the same area, make sure to remove all the potatoes, as they will grow again the following year if left in the ground.

Frequently asked questions

Spuds can be grown throughout the year in Australia, depending on the region and weather. As long as there is no frost, seed potatoes can be planted. Spuds need to be frost-free for 60-90 days to be successfully harvested. The best soil temperature for planting is between 10°C and 30°C.

Spuds can be grown directly in the garden, in a wire frame, large containers, or bags. If you are planting in the ground, prepare your soil by adding animal manure or fertiliser before planting. Plant your spuds 10cm deep, 40cm apart, in rows 1m apart. Cover the spuds with soil, leaving the shoots exposed. As the shoots grow, cover them with soil a few times during the first four to five weeks, creating a loose mound.

Spuds need full sun and well-drained, rich soil. Keep the soil moist but not waterlogged, and water deeply when the top 2.5cm of soil feels dry. Apply a layer of organic mulch to conserve moisture and maintain soil temperature. Watch for pests such as aphids and whiteflies, and remove them by hand or with a stream of water.

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