How to Store Vegetables Over Winter and Keep Your Harvest Fresh for Longer
With our autumn vegetables becoming ready to harvest, it’s time to think about how we should be storing our crops for the winter. With the right knowledge and a bit of preparation, we can make our harvests last through the colder months and see us through to the spring.
We’ve put together this helpful guide on which vegetables can be stored and how to get the most out of your harvest this season.
Winter Vegetable Storage: Different Methods Explained
Whenever you read about storing crops through winter, you’ll see references to a few different techniques. Some will work for one vegetable but not for another, so it’s important to understand the differences to get the most out of your harvest.
Storing Vegetables in the Ground Over Winter
Storing your vegetables in situ simply means leaving your crops in the ground and harvesting them as and when you need them. Whilst many suitable varieties tolerate the cold well, some will still benefit from protection against hard frost. Covering the ground with a thick layer of straw or mulch can help insulate the soil, protect your crops, and make harvesting easier during cold weather.
Lifting and Storing Vegetables for Winter
This is where you gently lift your vegetables out of the ground, being very careful not to damage them. You need to brush off any excess dirt, but do not wash them, as this adds moisture and can cause your vegetables to rot. Generally, these crops will need well-ventilated storage, with the ideal temperature and conditions depending on the type of vegetable.
How to Store Root Vegetables for Winter
Root vegetables are a staple of winter harvests, but the best way to store them varies depending on the crop. From leaving them in the ground to lifting them for long-term storage, choosing the right method can keep your harvest fresh and usable throughout the colder months.
Storing Beetroot and Carrots for Winter
In mild conditions, beetroot and carrots can be stored in situ, only lifting them when they are needed. If properly looked after, beetroot and carrots stored like this can last until March. If you live somewhere with harsher conditions, however, lifting them for indoor storage may be necessary. Remove the foliage and store the roots in layers of slightly damp sand or a suitable peat-free alternative in a box. Keep them somewhere cool, dark, and frost-free to prevent them from shrivelling.
Storing Potatoes for Winter
You can successfully store maincrop potatoes for several months. Harvest them on a dry day and allow them to dry somewhere sheltered and out of direct sunlight. Gently brush off any excess dirt, and only store healthy, undamaged potatoes. Before storing, allow them to cure for around two weeks in a cool, dark, well-ventilated place to help toughen their skins. Once cured, place them in wooden boxes, cardboard boxes lined with newspaper, or hessian sacks in a cool, dark, frost-free space with good ventilation.
Storing Parsnips, Swedes, and Turnips for Winter
These vegetables are well suited to storing in situ, and parsnips in particular can benefit from cold weather, which helps convert some of their starches into sugars, enhancing their flavour. If you protect the ground from freezing, then they will be easier to dig up and use. When stored like this, parsnips and swedes can last until the following spring, though turnips are best used before late winter. In colder regions, swedes and turnips may need to be lifted for storage. Carefully lift them, remove the foliage, and store them in the same way as beetroots or carrots.
How to Store Squashes and Pumpkins for Winter
Harvest your squashes and pumpkins in the autumn before the first frost, leaving 5-10 cm of stalk attached. Never move them by the stalk as this can easily break and cause your fruits to rot. Once harvested, you then need to cure your crop by placing it in a single layer somewhere warm and well ventilated, such as a greenhouse or polytunnel, for 7-14 days, turning them halfway through. This helps to toughen the skins and heal minor scratches. Once cured, you should store your squashes and pumpkins somewhere with good airflow that maintains a temperature of around 10°C to 15°C. Make sure they are in a single layer and not touching one another. Depending on the variety and storage conditions, some squashes and pumpkins can last for several months, potentially through until early spring. Please note that acorn squashes do not require curing and are generally best used sooner.
How to Store Onions and Garlic for Winter
Onions and garlic both need to be properly cured before storing to ensure that the outer layers are tough and can protect the bulbs inside. Lay your harvest out somewhere dry with good airflow for 2-4 weeks until the roots are wiry, the foliage has dried out, and the skins feel papery. There are two main methods for storage. You can cut the roots back and trim the stems to around 2-3 cm above the bulb, storing them in nets, wooden crates, or even old tights for good ventilation. Alternatively, you can leave the stems intact and plait them together into a hanging string, although this method is best suited to onions and softneck garlic. Make sure you only store healthy bulbs that are firm and blemish-free. Keep your onions and garlic somewhere cool, dry, and well ventilated, away from direct sunlight. Avoid storing them alongside potatoes, as their different storage requirements can cause your crops to spoil more quickly.
Whatever vegetables you are storing for the winter, check on them regularly and remove any that have spoiled to prevent the rot from spreading to the rest of your harvest. Use any vegetables that are beginning to lose their freshness first, provided they are still safe to eat, and prioritise those with a shorter storage life. With a little care and preparation, your homegrown produce could last you through the winter and into the spring.
