Good enough to eat
Harvesting celeriac It’s a hugely flavoursome root veg which can be combined with potato and garlic for a delicious mash or grated into salads to add a fresh flavour.
When the stem base has swelled to around 10cm in diameter it should be ready for harvesting.
The leaves should be cut off the root and can be added to stocks and soups.
Once you’ve dug it up, trim off the fibrous roots and clean off excess soil, then dry it in a cool, frost-free place before storing it in dry sand.
You can leave celeriac in the ground over winter, but be aware the slugs might get to it first. You can also freeze it by cubing and blanching it.