Growing Horseradish

Armoracia rusticana : Brassicaceae / the mustard or cabbage family

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

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

  • P = Plant crowns
  • Easy to grow. Plant root pieces. Best planted at soil temperatures between 50°F and 77°F. (Show °C/cm)
  • Space plants: 20 inches apart
  • Harvest in 16-24 weeks. Some improvement in flavour if left till after frost..
  • Compatible with (can grow beside): Best kept separate

Your comments and tips

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28 Aug 22, Geraldine Thaumuller (South Africa - Humid sub-tropical climate)
Can I grow horseradish on the South Coast of KZN
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21 Sep 22, Bee-Pie (South Africa - Humid sub-tropical climate)
Horseradish is a cool weather plant so plant it in Autumn. Just ensure good drainage and air flow around the plants as the humidity factor in KZN could cause powdery mildew. Please send me some! 063 409 3911.
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01 Aug 22, Col (Australia - temperate climate)
My horseradish has been in a trough approx 60x30cm for years and never harvested, the new leaves are shooting. Can I repot or plant it in the ground now?
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22 Jul 22, Celia Gobetti (Australia - arid climate)
I want have the plant at my place! How I can plant? How and where I can buy?
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29 Jul 22, (Australia - arid climate)
Read the notes here, arid plant june july.
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27 Mar 22, Gerhard Venter (South Africa - Dry summer sub-tropical climate)
Where can I buy horseradish to plant ? I stay in Knysna.
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21 Sep 22, Bee-Pie (South Africa - Humid sub-tropical climate)
I have scoured the internet! You can only import them at this stage.
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08 Oct 21, Marc (Australia - temperate climate)
How can I determine when horseradish rhizomes are ready to harvest. Time is a bit out of whack because it took ages for it to take. Currently the outer leaves are about 45cm long 15 cm wide clear healthy emerald green colour with many smaller leaves inside them. I planted a single piece of 5 cm rhizome in a 30 ltr veg bag in March this year. Only started going about a month ago but is going very well now.
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11 Oct 21, Anon (Australia - temperate climate)
Go to Temperate Zone and Horseradish and read all the notes there about it.
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02 Oct 21, Mike Austin (New Zealand - temperate climate)
Hi, Also looking for Horseradish Crowns , live in Kawerau, BOP .
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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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