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

26 Dec 15, Terry (Australia - temperate climate)
I live in inner city Sydney and planted horseradish in potting mix in a pot at the back of the pot section on my west-facing balcony in about June (?). I've pretty much left it alone except for an occasional water if it's been particularly dry. The leaves have grown well - they were pretty lush before though I've noticed now that they're a bit torn - whether this is from an insect or from a few hailstorms I'm not sure. Thing is... I have no idea when to harvest them. How do I know if they're ready to be pulled up and used? And can I just pull up one leaf/plant and leave the rest in the pot? Also, I'm experimenting now but I really want to have some fresh root available in March/April next year. Do I have to replant at a particular time? Can I leave the current plants in the pot until then? etc
20 Dec 15, hi my name is tshidi,m staying in krugasdorp, gauteng. (South Africa - Summer rainfall climate)
Where can i buy horse radish root?
05 Jan 16, Robert (South Africa - Summer rainfall climate)
Hi Tshidi, you can buy it here online "livingseeds" web site
05 May 16, Ica (South Africa - Dry summer sub-tropical climate)
HI Robert, I'm also looking for fresh horseradish. Please give website link , you're referring to. Thank you
11 Dec 15, Ananda (South Africa - Dry summer sub-tropical climate)
I am looking for horseraddish plants to buy. Will send couriers to collect or pay postage. I am in Parys, Free State.
24 Oct 15, warren (New Zealand - sub-tropical climate)
you can get it from a sth island supplier - type in horse raddish on trade me. lovley people to deal with
07 Oct 15, Mark (USA - Zone 5b climate)
To get the hottest flavor when preparing horseradish root: DO NOT add vinegar while grinding the root! If you're using a food processor, add water, just enough to get it to grind well. Once it is fully ground, let it sit for about 5 minutes. THEN add vinegar. During the 5 minutes, the horseradish (once ground) undergoes a chemical reaction that makes it much stronger. The reaction is (I believe) with water, triggered by breaking up the cells. Vinegar stops this reaction; if you do it too early, the heat never develops. But after a few minutes, without vinegar, the heat will start to fade, so you add vinegar
29 Oct 15, Roy (Australia - temperate climate)
Good advice about when to add the vinegar Mark, do you have preference i.e malt, cider, wine red or white or maybe balsamic? I've been to the USA but apart from temperate and sub tropical I don't know about the zones like yours which is 4a please enlighten.
01 Sep 15, Sabine (New Zealand - temperate climate)
Where can I get a horseradish root in Christchurch????
07 Aug 15, Ed Rossiter (South Africa - Dry summer sub-tropical climate)
hi I'm in Witbank, looking for some roots to plant, help please, 0839552020
Showing 251 - 260 of 526 comments

Margaret, I haven't found the perfect time, the size of the leaves don't tell me anything. Last week I did use some, just scraping away surrounding soil and seeing the thickness of the root helped, the root was fairly thick, about the same as two fingers plus a little more. Getting it out is the hard part, the roots go down a long way so I cut the amount I needed and replaced the soil. Be careful if you do this because the root is very strong, a serrated knife worked o.k

- Roy

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