Can my Swedes be left in the ground until needed or is it best to lift and store them, if so how?
Swedes are hardy and can be left in the ground until the end of the year, when they should then be lifted to prevent them becoming woody.
If the weather becomes cold while they are in the ground, cover them with a thick layer of straw which should provide sufficient protection in all but the coldest areas.
When lifted they can be stored in boxes in a cool, dry place, in a similar way to carrots.
Alternatively, you could build a swede clamp outdoors.
Stack the swedes on a layer of straw in a sheltered, well-drained area and cover with another layer of straw.
In very cold weather provide further protection by covering the straw with a layer of soil.