
Growing potatoes in bags is a great option for those with limited space. It is an easy and inexpensive way to grow potatoes, and it can be done almost anywhere that receives plenty of sunlight. All you need is a bag, some compost or soil, and seed potatoes. The bag lets the plant spread out its roots, and you can add layers of soil as it grows, encouraging the production of more potatoes. This method also makes harvesting easier, as you don't have to dig for your potatoes. With the right care and conditions, you can enjoy a bountiful harvest of homegrown potatoes.
| Characteristics | Values |
|---|---|
| Space | Potato grow bags are ideal for small spaces and patios. |
| Soil | Potato plants need nitrogen and potassium in the soil for tubers to grow. Use a high-quality, free-draining potting mix. |
| Container | Choose a potato grow bag or make your own bag out of burlap. |
| Seed Potatoes | Purchase certified disease-free seed potatoes. Cut into 2-ounce chunks, each with at least one 'eye'. |
| Planting | Place seed potatoes in the bag with the eye facing up. Cover with 3- 4 inches of soil. |
| Sunlight | Place the bag in a sunny spot with at least 6 hours of sunlight a day. |
| Watering | Water regularly, 2-3 times a week. Avoid overwatering as potatoes can rot. |
| Harvesting | Harvest when leaves start to wilt, around 12-20 weeks after planting. Tip the bag over to collect potatoes. |
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What You'll Learn

Potato bag varieties and how to make your own
Grow bags are an excellent solution for patio or small-space gardeners. You can purchase a potato grow bag or make your own. The bag lets the plant spread out its roots, and you can add layers of soil as it grows.
Potato Grow Bag Varieties
The Gardener's Best Potato Grow Bag and Gardener's Best Jumbo Potato Grow Bag are two options designed with potato growing in mind. The regular bag holds three to five seed potatoes, while the jumbo bag holds seven to ten. The regular bag holds 50 quarts of soil, while the jumbo bag holds about 120 quarts.
Making Your Own Potato Bag
You can make a potato bag out of burlap or even a cardboard box. If you're feeling crafty, you can also sew your own fabric bag out of 100% cotton. This can be used to cook potatoes in the microwave.
- Assemble the pattern, which should be very easy and only take a few minutes.
- Sew the bag.
- Dry the bag out after each use. The bag is machine washable, but avoid using fabric softener.
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The best time to plant potatoes in Australia
In warm climates, potatoes can be harvested between June and August, so planting in early spring around March is ideal. In cool climates, potatoes are harvested between December and February, so they should be planted in late summer or early autumn, around August or September.
For temperate climates, the ideal soil temperature for planting potatoes is 7 to 10 degrees Celsius, and the ideal temperature for growth is 16 to 21 degrees Celsius.
It's important to note that potatoes won't grow during frost, so in cooler areas, planting should be timed to ensure the foliage emerges after the last frost.
Additionally, when planting potatoes in Australia, it's recommended to use certified seed potatoes that are disease-free. These seed potatoes should be placed with the ''eye' or sprout facing upwards, and the soil should be kept moist, but not soggy, through regular watering.
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Preparing seed potatoes
Seed potatoes are small to medium-sized potatoes that are specially grown for planting. They are certified to be disease-free, which is important as potatoes can carry serious diseases, such as blight, that can infect your soil and other plants. You can buy seed potatoes from garden centres or online suppliers, or you can use shooting supermarket-bought potatoes, but this is not recommended due to the risk of disease.
To prepare your seed potatoes, start by cutting them into chunks, each with at least one "eye"—this is the spot on the potato where a shoot will develop. The size of the chunks should be a little larger than a large egg or a lime. If your seed potatoes are small, you can plant them whole. Once you've cut your seed potatoes, let the cut pieces dry for around 24 hours before planting.
Before planting, you can also try "chitting" your seed potatoes. This involves allowing the seed potatoes to develop small shoots prior to planting. To do this, place the seed potatoes in a single layer in an open egg carton, with the "eye" facing up. This gives your potatoes a head start, especially in cool areas, as it allows you to start the growing process indoors before the weather warms up.
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The hilling method
To use the hilling method, start by digging a trench about 4 to 6 inches deep. Add an inch of compost to the trench and mix it with the soil. Then, plant your seed potatoes with the cut end down and the eyes facing upward. If you are planting uncut seed potatoes, put the side with the most eyes facing up. Space the seeds about every 12 inches for main crop potatoes or as close as 6 inches for small early potatoes.
After planting your seed potatoes, cover them with 1 to 2 inches of soil, leaving the trench partially unfilled. As the potato vines grow, continue to add soil to the trench, covering about a third of the stem each time. You can also add a thin layer of straw between each addition of soil. Make sure to keep the soil moist, and water regularly, especially during the hottest part of the summer.
When your potato plants reach about 8 inches in height, it's time to "hill" them again, adding enough soil to bury about one-third of the height of the main stems. Continue this process until you reach the top of your container or run out of soil. The taller the hill, the more potatoes you will likely yield.
Using the hilling method can be more work and take more planning than other methods, but it is a successful way to increase the yield of your potato plants and grow big, healthy potatoes.
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Potato pests and common problems
Pests
The most common pest for potatoes is the Colorado potato beetle. These beetles are easily identifiable and can be controlled by hand-picking them off the plants and dropping them into a bucket of soapy water. The beetles may bother your plants for a few weeks, but consistent monitoring and removal will keep your plants healthy.
Another significant pest is the black bean aphid, which affects a broad range of plants, including potatoes. Aphids can transmit viruses, such as potato virus Y (PVY), potato leaf roll virus (PLRV), and potato virus A (PVA). They are usually noticed due to their contrasting colour (black or very dark green) and the presence of ants.
Diseases
Potato late blight is a risk to potato farming in Australia, with the potential to cause severe damage. Keep a lookout for spotted leaves and rotting in potatoes, tomatoes, and eggplants. Importation of infested seed potatoes is the most likely way that potato blight enters Australia, so always source certified disease-free seed potatoes from accredited suppliers.
Bacterial wilt is another concern, as it can remain in the soil for up to six years after an initial outbreak. It can spread through contaminated tools, second-hand bags, or bins that previously held infected potatoes. To prevent this, always use biosecurity measures and clean your equipment thoroughly.
Other Issues
Long-distance transport of infested plants, plant tops, soil, or packaging can introduce exotic aphids to your potatoes. If you notice more damage than usual or if standard management strategies are ineffective, contact the Exotic Plant Pest Hotline in Australia at 1800 084 881.
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Frequently asked questions
Growing potatoes in a bag is a great option for gardeners with limited space. It also allows you to control the growing conditions, making them ideal for your potatoes to thrive. Potato bags are also easier to harvest than potatoes grown in the ground.
You will need a potato grow bag, compost or soil, and seed potatoes. Potato bags can be purchased or made from materials such as burlap. Seed potatoes can be bought from garden centres or online suppliers.
Place your seed potatoes in the bag with the 'eye' facing up and cover them with a layer of soil. As the shoots grow, gradually add more soil until the bag is full. Water regularly, but be careful not to overwater as this can cause the potatoes to rot. Harvest when the leaves start to wilt, which is typically around 12 to 20 weeks after planting.







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