Growing Celeriac

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

(Best months for growing Celeriac in USA - Zone 5a regions)

S = Plant undercover in seed trays P = Sow seed

  • 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
  • Young celeriac

A form of celery which has a swollen root and lower stem. Raise seeds in individual pots and plant out after last frost to give them plenty of time to develop a good root. Grow in a very fertile, rich soil. Water generously.

In cold climates start under glass in late winter/early spring

Culinary hints - cooking and eating Celeriac

Cook whole, scrubbed and peeled.
Or slice or dice.
Tastes like celery.

Your comments and tips

17 May 21, Hazel (New Zealand - temperate climate)
I planted out celeriac from Mitre10 in Jan or early Feb. I've harvested 6 huge balls in the last 4 weeks and wish I had more. They have been very worthwhile, didn't take a lot of space, got good watering and their companions were runner beans, lettuce and silverbeet. My soils are quite light in coastal Oamaru. They have made a most delicious soup. I mashed the first of the harvest but found it a bit watery as a mash. If you are following a low carb or keto diet I think this veg would be very worthwhile.
05 Apr 21, Colleen Andrews (New Zealand - cool/mountain climate)
In Taupo I'm currently harvesting some whopping celeriac after coming across a punnet in Mitre 10 in January. This is a first for me and I'll be looking to a repeat next season. They've had lots of water and an occasional liquid feed of seaweed. The previous crop was broad beans. A winning formula by the results.
06 Apr 21, Anonymous (New Zealand - sub-tropical climate)
The beans would have put some nitrogen into the soil.
16 Sep 20, Michelle Tanner (New Zealand - temperate climate)
I grew wonderful celeriac in Kent,UK on limestone soil but here in the Waikato I have much less success. If they grow at all they are much smaller (golf to tennis ball rather than the small football sized ones from before). I am going to give it one last go this year, trying a variety of sizes and will feed and water like mad!
17 Sep 20, (New Zealand - temperate climate)
Buy a cheap pH tester. If you have heavy soil, lighten it up a bit with sand or compost. Start with with good rich soil and MAYBE a light fert when plants are 8 weeks old. DON
18 Sep 20, (New Zealand - temperate climate)
Don't over fert or water it. 3 good waterings a week is enough.
16 Sep 20, Liz (New Zealand - temperate climate)
The answer might be in your soil. It would be worth testing to see how acid it is . Most NZ soils tend towards acidity. Your limestone soil in Kent was more alkaline than acid.
01 Dec 18, Lynn Lawler (USA - Zone 9b climate)
Hi! I live on the east coast of Central Florida and would like to be able to grow celeriac seems to do really well here, so does anyone know if I can grow celriac? Also, do you know if it can be regrown for the seeds?
29 Nov 17, Beate (USA - Zone 8b climate)
I want to grow some Celeriac and wonder if the southern heat in the summer will affect its growth. I live in Columbus Georgia and celeriac is not known down here. Also, if I sow in January, will the frost affect it?
29 Dec 17, Donna (USA - Zone 8b climate)
Being as Celeriac is a root crop, it can easily handle Winters in Georgia, IMO. I live in Port Angeles, WA, and I grow Celeriac all year around. However, I do use about 4" of Alder wood chips. Works great at keeping everything nice and cozy. :-)
Showing 1 - 10 of 76 comments

I have grown celeriac successfully at Caboolture and Morayfield. It needs a rich moist soil and some mulch around the plants. I strike them from seed in a pot with seed mix, just under the surface and keep moist. I sow them in April though I am not sure if it is the tight time. They take a long time to grow, being biennial. Never let them dry out though. And they do not like wet feet in the heat. Also, when the bulbs are big enough and start sprouting leaves, when big enough, they can be pulled off and replanted. The seeds can be good on the Net. Happy growing!

- Walter

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