How To

How to Grow Horseradish

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By eHow Contributing Writer
(22 Ratings)

People tend to have strong feelings about horseradish: Either they loathe the stuff, or they can't imagine a roast beef sandwich without it. If you fall into the latter camp, here's good news: This hardy perennial herb is a cinch to grow from USDA zone 3 south.

Difficulty: Easy
Instructions

Things You'll Need:

  1. Step 1

    Buy plants or roots at the nursery (horseradish is rarely, if ever, grown from seed) for planting after the last frost in spring.

  2. Step 2

    Choose a site for location rather than growing conditions - a spot far removed from any other plants you care about. Left to its own devices, horseradish will stampede through your garden faster than you can say "Hi-ho, Silver!" But it will grow in any circumstances except deep shade or constant wetness.

  3. Step 3

    Ensure the straightest, plumpest roots by tilling the soil to at least 12 inches, amending it with plenty of compost and removing all rocks and other obstructions.

  4. Step 4

    Set plants or roots 9 to 18 inches apart, with the crown (the top of the root and the start of the top growth) about 4 inches below the soil surface, and water thoroughly.

  5. Step 5

    Mulch to retain moisture and discourage weeds if you want to, but it's not necessary - horseradish thrives on neglect.

  6. Step 6

    Dig horseradish roots anytime from midsummer on, but for best flavor wait until after the first frosts.

Tips & Warnings
  • The surest way to control horseradish's rampant nature is to grow it in containers. The wooden half-barrels sold in nurseries work perfectly. Use potting soil enriched with compost, and water frequently.
  • To make horseradish sauce, simply mix 2 lbs. grated root with 1 c. malt vinegar or white wine. You'll get about 1/2 pint of sauce from the roots of one plant, so plan your nursery order accordingly.
  • Horseradish has uses beyond the kitchen. A thin layer of ground roots, spread on a wet cloth, generates heat and improves blood flow - much like a hot water bottle. Try it on hemorrhoids or aching muscles.
  • If your eyes start to burn at the mere thought of chopping onions, don't even think about grating horseradish. As an eye irritant, it starts where onions leave off.
  • Avoid manure and other fertilizers high in nitrogen: It will cause branching roots and excessive top growth.

Comments  

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Anonymous said

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on 8/8/2006 When you dig the hole to plant your horseradish, place a large, flat rock in the bottom. This will help fatten up the roots and prevent long, spindly roots from spreading everywhere.

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