How Long Potatoes Last in Storage

How long potatoes last in storage depends on the variety, how they were prepared after harvest, and the conditions they’re kept in. When stored correctly, potatoes can last anywhere from a few weeks to several months without losing quality.

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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.
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Average Storage Life of Potatoes

First early potatoes:
Last 1–2 weeks
Best eaten fresh and not suitable for long-term storage.

Second early potatoes:
Last 2–4 weeks
Can be stored briefly in cool, dark conditions but are still best used fairly quickly.

Maincrop potatoes:
Last 4–6 months
Thick skins and higher dry matter make them ideal for long-term storage.

Some maincrop varieties can last even longer if conditions are ideal.

What Affects How Long Potatoes Last

Variety Type

Maincrop potatoes store far better than early varieties due to tougher skins and slower sprouting.

Drying and Curing

Potatoes that are properly dried and cured last significantly longer. Curing toughens skins and heals small cuts, reducing rot.

Storage Temperature

• Too warm → rapid sprouting
• Too cold → poor flavour and texture

The ideal range is 4–8°C.

Light Exposure

Light causes greening, which shortens shelf life and makes potatoes unsafe to eat in large amounts.

Humidity and Ventilation

Poor airflow or excess moisture leads to mould and rot. Breathable containers extend storage life.

Signs Potatoes Are Going Bad

Discard potatoes if they are:

• Soft or mushy
• Smelling unpleasant
• Heavily sprouted and shrivelled
• Mouldy or leaking
• Deep green throughout

Small sprouts can be removed if the potato is still firm and healthy.

How to Make Potatoes Last Longer

• Store only dry, undamaged potatoes
• Cure maincrop potatoes before storage
• Keep them in darkness
• Use breathable containers such as hessian or paper sacks
• Store away from onions
• Check every 1–2 weeks and remove spoiled potatoes

Good habits significantly extend storage life.

Potatoes vs Shop-Bought Storage Life

Shop-bought potatoes often last 2–8 weeks, depending on handling and packaging. Homegrown potatoes, when cured and stored properly, usually last much longer.

What Happens in Spring?

As temperatures rise and daylight increases, potatoes naturally begin to sprout. This is normal and signals the end of long-term storage.

Use remaining potatoes promptly once sprouting becomes frequent.

Final Thoughts

Potatoes can last from a few weeks to several months in storage depending on variety and care. With proper drying, curing, and cool, dark storage conditions, maincrop potatoes can reliably last through winter and beyond.

Correct storage not only extends shelf life but preserves flavour and quality.