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 USA - Zone 5a 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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12 Jan 20, (New Zealand - temperate climate)
I bought mine on trademe Cheers Lena
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28 Feb 20, MO (New Zealand - temperate climate)
Be very careful when planting horseradish as it is invasive, confine it to a container.
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26 Dec 19, Joseph (Australia - temperate climate)
I have some Horseradish growing but cant get it to grow in to any thing of consequence, it spreads like wild fire but roots are too small to grate. Does anyone have a suggestion please
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30 Dec 19, anon (Australia - sub-tropical climate)
Sounds like you are using a fertiliser with a high N %. N produces grow of leaves etc, P is good for root development. K for flowers/fruit. Try and plant them after another crop has used up most of the N.
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10 Nov 19, keith walker (New Zealand - temperate climate)
Hello, I have just moved to New Zealand and i am trying to find some Horseradish root to grow in my new veg patch. i am in Cambridge if anybody can help i would be very grateful regards Keith
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16 Jan 20, Danielle Saunders (New Zealand - temperate climate)
Hi Keith, I have just been given some horseradish plants. Would you like some once I have more? I'm in the waikato also. Email me dpsaunders85@gmail.com cheers.
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28 Dec 19, Peter Collis (New Zealand - temperate climate)
Hi Keith, Like you, I am also keen to get some horse radish plants as the stuff you can buy here is only the creamed sort and a bit bland. Did you have any luck finding a source?
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11 Nov 19, anon (New Zealand - sub-tropical climate)
Search for some seed selling companies on the internet in NZ.
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31 Oct 19, Jack Jansen (New Zealand - temperate climate)
I’m in Stanmore Bay Whangaparaoa and would like to know if I could get hold of some horseradish root to strike a plant. Thanxs
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28 Aug 19, Kay Walden (New Zealand - temperate climate)
Would really be grateful if someone in Southland has a piece I could strike a plant from please
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Showing 71 - 80 of 529 comments
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As regards horseradish, I have grown this plant, but in my opinion, it would be a mistake to think you can plant it in April and harvest in 24 weeks time and have a useful root. For Horseradish to get a nice thick root, with the distinct pungent flavour, it takes a good two years per plant. And do not underestimate how much work it is to clean the dirt out before shredding the root. It is a wonderful taste and worth the hard work, but in my experience, you need to set up a dedicated bed, plant the roots and then prepare to wait a few years to get the cycle of having a constant supply of usable nice thick roots. The roots grow very deep into the soil (a good 2-3+ feet) so it is a good idea to leave some room around each group of plants, because you need to dig quite a wide hole to get the roots out. We always harvest at Easter here in Sydney. Bon apetit.

- Pauli

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