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How to grow celeriac

Celeriac is delicious raw, mashed and roasted. Follow our step by step guide to growing your own at home.

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
At its best
At its best

Plant is not at its best in January

Plant is not at its best in February

Plant is not at its best in March

Plant is not at its best in April

Plant is not at its best in May

Plant is not at its best in June

Plant is not at its best in July

Plant is not at its best in August

Plant is at its best in September

Plant is at its best in October

Plant is at its best in November

Plant is at its best in December

To do
To do

Do not To do in January

Do not To do in February

Do To do in March

Do To do in April

Do To do in May

Do To do in June

Do To do in July

Do To do in August

Do To do in September

Do To do in October

Do To do in November

Do To do in December

Celeriac has an unusual flavour, a cross between celery, fennel and aniseed. The edible part is the swollen root.

Celeriac is not difficult to grow but it does take a long time to mature, taking up space on the veg plot. The seed is generally more expensive than other veg and germination can be patchy. However with a bit of patience (and a few extra seeds) you will soon have a few sturdy plants.

Celeriac grows well in heavy soils and is a good choice if you’re looking for a crop that thrives in poor summers. Here’s how to grow it.

Celeriac grows well in heavy soils and is a good choice if you're looking for a crop that thrives in poor summers.

You will need

  • Celeriac seeds
  • Seed tray
  • Good quality compost, such as John Innes no.1
  • Heated propagator
  • Capillary matting
  • Small pots
  • Pencil or dibber
  • Bulky organic matter
  • Fork
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Total time:

Step 1

Sow in spring into a seed tray filled with good-quality compost. Sprinkle the seed lightly in shallow drills, then lightly cover with compost.

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Step 2

Water gently, then place the tray in a heated propagator at 10-12°C. Ensure the compost remains moist; a layer of capillary matting beneath the seed tray can act as a reservoir.

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Step 3

Once the seedlings are large enough to handle easily, transplant each into its own pot of compost, firm and water well.

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Step 4

Plant out the plants in late spring, when they are 5-7cm tall. Space them 25-30cm apart in rows 30-45cm apart. Do not bury the crowns. Water well during dry periods or on lighter soils. To retain moisture it’s worth applying a bulky, organic mulch straight after planting, making sure it is kept clear of the swelling roots.

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Step 5

Celeriac should be ready to harvest from late September onwards, but a more intense flavour develops if left in the ground longer. You may need to use a fork to gently lift out each root.

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How to enjoy celeriac

Celeriac can be eaten raw, grated into a winter salad or used as a crudite. It can also be mashed or roasted.