No Room for a Vegetable Plot? Then Grow Potatoes in a Bag

May 16, 2026

Why Growing Potatoes in a Bag Is Perfect for Small Gardens

If you're short on outdoor space but still dream of harvesting your own fresh potatoes, growing potatoes in a bag is the ideal solution. Whether you have a small patio, a balcony, or just a tiny corner of a garden, potato grow bags let you enjoy a rewarding crop without needing a traditional vegetable plot.

What Are Potato Grow Bags?

Potato grow bags are sturdy, breathable fabric or plastic containers designed specifically for growing potatoes in small spaces. They come in a range of sizes — typically 10 to 50 litres — and are perfect for container gardening on patios, balconies, and courtyards. Their portability means you can move them to follow the sun or protect them from frost.

Which Potato Varieties Are Best for Bags?

For growing potatoes in containers, early varieties tend to work best as they mature quickly and don't need as much depth. Popular choices include:

Charlotte – a reliable, waxy salad potato
Maris Peer – compact and great for small bags
Swift – one of the earliest to harvest
Rocket – fast-growing and ideal for beginners

How to Grow Potatoes in a Bag: Step-by-Step

Choose your bag: A 30–40 litre grow bag is ideal for 2–3 seed potatoes. Make sure it has drainage holes or is made from breathable fabric.
Chit your seed potatoes: Place seed potatoes in a cool, light spot for 4–6 weeks before planting to encourage sprouting (chitting). This gives them a head start.
Add compost: Fill the bottom third of the bag with good quality multi-purpose or potato compost.
Plant your seed potatoes: Place 2–3 chitted seed potatoes on top of the compost, sprouts facing up, and cover with another 10cm of compost.
Earth up: As the shoots grow, keep adding compost to cover them, leaving just the top leaves showing. Repeat until the bag is full. This process, known as earthing up, encourages more potatoes to form.
Water regularly: Potatoes in bags dry out faster than those in the ground. Water consistently, especially during dry spells, but avoid waterlogging.
Feed fortnightly: Once the bag is full of compost, feed with a high-potash liquid fertiliser every two weeks to boost your yield.
Harvest: Early varieties are ready in around 10–12 weeks. Simply tip the bag out and collect your potatoes!

Top Tips for a Great Potato Bag Harvest

Position your bags in a sunny spot — potatoes need at least 6 hours of sunlight a day.
Use peat-free compost for a more sustainable grow.
Protect young shoots from late frosts by moving bags indoors or covering with fleece.
Don't let the compost dry out completely — consistent moisture is key to avoiding hollow or cracked potatoes.

The Benefits of Growing Potatoes in Bags

Beyond saving space, bag-grown potatoes are easier to manage and harvest than those grown in the ground. There's no digging required — just tip the bag out when they're ready. Bags also reduce the risk of soil-borne diseases like blight, as you're using fresh compost each season.

Whether you're a first-time gardener or a seasoned grower looking to make the most of a small space, potato grow bags are a brilliant, low-cost way to enjoy a homegrown harvest.