Photo by Melody

PlantFiles: Horseradish
Armoracia rusticana

Family: Brassicaceae (brass-ih-KAY-see-ee) (Info)
Genus: Armoracia (ar-mor-AY-shee-uh) (Info)
Species: rusticana (rus-tik-AH-nuh) (Info)

Synonym:Cochlearia armoracia
Synonym:Nasturtium armoracia
Synonym:Radicula armoracia
Synonym:Rorippa armoracia
Synonym:Armoracia lapathifolia

4 vendors have this plant for sale.

36 members have or want this plant for trade.


12-18 in. (30-45 cm)

15-18 in. (38-45 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

Unknown - Tell us

Bloom Color:
White/Near White

Bloom Time:
Mid Summer


Other details:
May be a noxious weed or invasive
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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There are a total of 18 photos.
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5 positives
3 neutrals
No negatives

Gardeners' Notes:

Positive FlaFlower On Nov 4, 2011, FlaFlower from Miami Dade, FL (Zone 11) wrote:

I planted this in a cement planter that is part of the house. I could not get a thing to grow in it, not bulbs, tomatoes, even our native weeds would not survive this horror of a planter even after I dug out and replaced what I believed to be the same 50 year old dirt. Finally in the grocery store I saw some budding horseradish took 2 tubers home to give them a try...I'm going to get 3 more as soon as I find them they LUV the planter, been there a year now and they are florishing and they are so attractive with there bright green lush leaves...thank goodness the planter is no longer an eye sore from the road...Bonus they require NO care...and NOTHING chews on them (dancing)

Neutral bonehead On Nov 23, 2009, bonehead from Cedarhome, WA (Zone 8b) wrote:

I find this to be a very coarse, but not yet invasive plant. It's in my herb garden, so I've left it room to become comfortable.

Positive philotea On Sep 3, 2008, philotea from Philadelphia, PA wrote:

Competes very well with useless invasives, stays green all summer long without watering (afternoon shade in Pennsylvania), reasonable winters won't kill it, and you can eat it all! Beat that.

Neutral pajaritomt On Jul 30, 2006, pajaritomt from Los Alamos, NM (Zone 5a) wrote:

Be warned. Horseradish will take over. I have heard that it should be planted in a bucket so it won't take over your garden. I didn't listen. Now I am fighting to get it out of my lilies. Fresh horseradish is fabulous though.

I am currently trying to grow it in a 6 inch plastic pipe. This is supposed to make it easy to harvest -- just shake it out of the pipe and there is your root. It also keeps it out of your garden.

I considered a negative for this plant due to its invasiveness, but it has redeeming characteristics. The leaves are attractive, also.

Neutral Gabrielle On Jan 24, 2006, Gabrielle from (Zone 5a) wrote:

Put horseradish where you want it to stay because it is hard to get it all out when you move it. Preparing the root is a good way to clear your sinuses and flood your eyes!

Positive mercedinus On Jul 6, 2005, mercedinus from Saint Cloud, MN (Zone 3b) wrote:

The Armoracia rusticana is a beautiful perennial plant with the ability to feed horseradish lovers as myself. My second year with the plant was delightful because one of the plants sent a stalk shot of white flowers in early summer which lasted for approximately three weeks. My only recommendation is to not rototill this plant expecting to eradicate it. The plant will spread which is dependent upon how much and far one tills. Also the plant tends to struggle if transplanted... but don't fret. Give the precious one more time (maybe a year or so) and you'll be impressed with the results.

Positive Joan On Dec 29, 2004, Joan from Belfield, ND (Zone 4a) wrote:

Very easy to grow, and makes the best horseradish. My grandma always told me to harvest horseradish in the months that ended in "r".

Positive lupinelover On Jan 22, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:

Fresh horseradish is the best! Very easy to grow, out-competes almost all other plants.


This plant has been said to grow in the following regions:

Midland City, Alabama
Big Delta, Alaska
Phoenix, Arizona
Clovis, California
Merced, California
Colorado Springs, Colorado
Wilmington, Delaware
Altha, Florida
Deland, Florida
Keystone Heights, Florida
Titusville, Florida
Payette, Idaho
Jacksonville, Illinois
Machesney Park, Illinois
Fort Wayne, Indiana
Barbourville, Kentucky
Prospect, Kentucky
Slaughter, Louisiana
West Baldwin, Maine
Cumberland, Maryland
Upper Marlboro, Maryland
Owosso, Michigan
Saint Cloud, Minnesota
Carson City, Nevada
Plainfield, New Jersey
Los Alamos, New Mexico
Deposit, New York
Ithaca, New York
Kure Beach, North Carolina
Wilson, North Carolina
Winston Salem, North Carolina
Belfield, North Dakota
Belle Center, Ohio
Fort Jennings, Ohio
Richmond, Ohio
Portland, Oregon
Salem, Oregon
Tenmile, Oregon
Philadelphia, Pennsylvania
Simpsonville, South Carolina
Belton, Texas
Katy, Texas
North Richland Hills, Texas
Petersburg, Virginia
Spokane, Washington
Stanwood, Washington
Kinnear, Wyoming
Riverton, Wyoming

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