Growing Celeriac

Apium sp. : Apiaceae / the umbelliferae family

Jan F M A M J J A S O N Dec
                  S S  
T                     T

(Best months for growing Celeriac in New Zealand - cool/mountain regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • Grow in seed trays, and plant out in 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 46°F and 70°F. (Show °C/cm)
  • Space plants: 18 - 31 inches apart
  • Harvest in 14-28 weeks.
  • Compatible with (can grow beside): Beans, brassicas, carrots, leeks, lettuce, peas, sage, tomatoes, onions

Your comments and tips

24 Feb 17, Trudy (New Zealand - sub-tropical climate)
I live in Warkworth and currently eating those as seeded Spring 2016. Seeds I purchased were Mars from egmont seeds.
20 Jan 17, John (Australia - temperate climate)
If you can grow celery you should have no trouble growing celeriac. Check out your local seed companies for appropriate varieties. Trust this helps.
Showing 11 - 12 of 12 comments

generally, lots of leaf but no bulb would mean too much nitrogen and not enough potassium. Nitrogen is used for leaf and stem growth, K is essential for fruit and flower formation. grow in soil that has had hungry plants like leafy greens of broccoli grown in it previously, and avoid high nitrogen manures, use well matured compost instead. The parent crops of modern cultivars of celery and celeriac grew in marshes, so make sure soil is deep and moisture holding. All through summer, it will be just leaves but the bulb will swell suddenly in a burst of metabolic resource direction in autumn/ early winter, in order to give itself food stores for the cold season. If temperatures are cool in your winter, you can leave in the ground unitl you need to harvest them.

- Amanda

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. GardenGrow is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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