Protect carrots with a layer of dry straw
Provided your soil is well drained, you can leave carrots in the ground for winter use, protected from cold and wet with a thick layer of fresh, clean straw. It’s worth weeding around them first, then mark where the carrots are because the tops will die in the cold. Spread a thick layer of dry straw over the carrots, ensuring that the mulch is pushed right against the tops. You might find they taste sweeter because the roots concentrate their sugars to survive the cold, but harvest all your carrots by early spring, before they start to flower.