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

09 Aug 21, Anon (New Zealand - sub-tropical climate)
Search online for a seller.
27 Mar 21, Garre MacKillip (USA - Zone 3b climate)
can i plant horseraddish i bought in a store, maybe cut the root in quarters and plant? just curious. Thank You.......Garre
29 Mar 21, (USA - Zone 3b climate)
Plant in June.
28 Feb 21, Deana Bess (USA - Zone 6b climate)
I am growing horseradish for the first time; I started it in a gallon container in the greenhouse in December and it has been doing well except aphids. I believe this is because it is ready for a bigger space and I am concerned about putting it out in the gardens now. Our last frost date is not until the end of April. However, even if the foilage died back, it seems it would re-grow when the temperatures were better. I am experimenting and will likely put it out and then if we get another frost or snow, I will cover it with mulch and leaves.
01 Mar 21, Anon (USA - Zone 6b climate)
It says plant Feb/Mar and you planted Dec. There could be your problem. Yours could be nearly ready to harvest but you still could be having frosts or snow. Not ideal. Take the advise here and plant later. Try your mulch and see how it works.
01 Feb 21, Andree (New Zealand - temperate climate)
Looking for a couple of horseradish plant if anyone has any. Can't seem to get it from the local plant shops. cheers
13 Mar 21, Don McLeod (New Zealand - temperate climate)
Hi Andre have you managed to get the horse radish yet . Am in the waikato and will be harvesting say July/ August if you would like some crowns
29 Aug 22, M H And D I Clear (New Zealand - cool/mountain climate)
Do you have any horseradish crowns. I live in upper hutt
06 May 21, LYN (New Zealand - temperate climate)
Hi Don I'd like to some of your horseradish crowns if they are available. I look forward to hearing from you. Thanks, Lyn
21 Jan 21, John (Australia - temperate climate)
I planted horseradish 2 months ago in November Which month should I dig up Also do I just take a root segment and replant
Showing 21 - 30 of 522 comments

It is in the notes here. Harvest time. Replant after winter I would assume.

- Anonymous

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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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