How to Grow Second Cropping Potatoes

Second cropping potatoes are a great way to enjoy a fresh harvest of new potatoes later in the year, often in autumn or early winter. By planting specially prepared seed potatoes in summer, you can make the most of unused space and extend the potato season well beyond the traditional harvest window.

⭐ Recommended Products — Seed Potatoes & Planting Essentials

• Seed Potato Collection (Early, First & Second Earlies)
A mixed pack of quality seed potatoes to plant for a steady harvest from early summer through to autumn. Ideal if you want variety in size and maturity times.
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• Certified Seed Potatoes (Single Variety Packs)
Choose popular individual varieties (e.g., Maris Piper, Charlotte, King Edward) to suit your taste and growing goals — consistent results from true seed stock.
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• Potato Grow Bags / Containers
Reusable, breathable bags designed specifically for growing potatoes — great for patios, small gardens, or increasing yield in limited space.
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• Potato Fertiliser / Soil Booster
Specially formulated feed to support healthy tuber development and improve yields — apply at planting or as a top-dress during the season.
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• Potato Planting Guides & Markers
Helpful tools and guides that take you through planting depth, spacing, and care — plus reusable markers to keep track of different varieties.
👉 Click here to see top options

What Are Second Cropping Potatoes?

Second cropping potatoes are seed potatoes planted in mid to late summer that produce a crop in autumn. They are usually grown in containers, grow bags, or sheltered ground and harvested as new potatoes rather than for long-term storage.

Which Potato Varieties Are Best for Second Cropping?

Only certain varieties are suitable for second cropping. These are usually first early or second early types that have been cold-stored to prevent premature sprouting.

Common second cropping varieties include:

• Charlotte
• Maris Peer
• Nicola
• Jazzy
• Pentland Javelin

These varieties mature quickly and perform well in shorter daylight periods.

When to Plant Second Cropping Potatoes

In the UK, second cropping potatoes are planted from late July to early August. Planting later than this risks the crop being affected by cold, low light levels, or early frosts before maturity.

Where to Grow Second Cropping Potatoes

Containers are the most reliable option for second cropping. Grow bags, pots, and buckets allow better control over temperature and moisture and can be moved under cover if needed. Greenhouses, polytunnels, and sheltered patios are ideal locations.

Preparing Seed Potatoes for Planting

Second cropping seed potatoes are usually supplied chilled to break dormancy. If sprouts are not visible, leave them in a light, frost-free place for a short time to encourage sprouting before planting.

How to Plant Second Cropping Potatoes

Fill containers with 10–15 cm of compost. Place seed potatoes on the surface with shoots facing upward, spacing them evenly. Cover with compost and water well. As shoots grow, add more compost to cover stems until the container is nearly full.

Watering and Feeding

Consistent watering is essential, especially during warm late-summer weather. Compost should remain moist but not waterlogged. Feed every 7–10 days with a high-potash liquid feed once plants are established to support tuber development.

Light and Temperature Requirements

Second cropping potatoes need as much light as possible as days shorten. Place containers in the sunniest available position. Protect plants from early frosts using fleece or by moving containers under cover.

Common Problems with Second Cropping Potatoes

Shortening days and cooler temperatures can slow growth. Overwatering in cooler conditions increases the risk of rot. Monitor plants closely and adjust watering as temperatures drop.

When to Harvest Second Cropping Potatoes

Second cropping potatoes are usually ready 10–12 weeks after planting. Harvest when plants flower or once foliage begins to yellow. These potatoes are best eaten fresh and are not suitable for long-term storage.

Why Grow Second Cropping Potatoes?

They provide fresh potatoes when the main season has finished, make good use of empty space, and are ideal for festive or autumn meals. They are also a great option for container gardeners.

Final Thoughts

Growing second cropping potatoes is a simple and rewarding way to extend your harvest season. With the right varieties, careful timing, and a bit of protection from colder weather, you can enjoy homegrown new potatoes well into autumn.