The Vegetable Garden

How To Grow Celeriac From Seed

How To Grow Celeriac From Seed
Now becoming popular in the kitchen, celeriac is grown for its mild tasting knobbly roots which have a lovely celery-like flavour and are extremely versatile. 

Often grated and added to salads, they are also used boiled or roasted as a hot vegetable, in soups and stews or as a tasty addition to mashed potatoes. It can be used as a general celery substitute and is easier to grow. The leaves can also be used for flavouring, in salads or as a garnish.

Celeriac is a cold season crop so can be started early, ready for harvesting in late summer. The leaves however can be picked earlier, taking just a few from each plant will allow the roots to grown on.


Sow indoors from March to April, thinly in trays of compost, 1.5cm/half-in. deep. Keep at 15-20C/60-68F. Thin out to 5cm/2in between plants. When large enough to handle transplant singly into small pots.


Young plants are planted out at the end of May/early June. They are very sensitive to cold weather at this stage, so should be hardened off slowly over a week or two. Planting out should be delayed if there is still a chance of frost. Using cloches will help warm up the soil before planting and then get them off to a good start. Plant out 30cm/12in. apart in rows 40cm/16in. apart making sure not to bury the crown - the stem base should be at soil level. Water in dry weather and mulch around the plants. Remove any side shoots as they form and from mid-summer onwards remove a few lower leaves to expose the crown. In late September draw a little soil around the swollen stem base to keep it white.


Start lifting from late September/early October. In most areas the roots can be left in the soil until required; cover with straw or compost to protect against frost.

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