Horseradish

Use our zone-based planting guide to know when to plant horseradish.

Plant name Zone Start seeds indoors (spring/fall) Start seeds outdoors (spring/fall) Plant seedlings/transplants outdoors (spring/fall) Plant spacing # plants per person
Horseradish 3a Not recommended April 15-May 1 April 15-May 1 1 foot 1
Horseradish 3b Not recommended April 15-May 1 April 15-May 1 1 foot 1
Horseradish 4a Not recommended April 15-May 1 April 15-May 1 1 foot 1
Horseradish 4b Not recommended April 15-May 1 April 15-May 1 1 foot 1
Horseradish 5a Not recommended March 15-April 1 March 15-April 1 1 foot 1
Horseradish 5b Not recommended March 15-April 1 March 15-April 1 1 foot 1
Horseradish 6a Not recommended March 15-April 1 March 15-April 1 1 foot 1
Horseradish 6b Not recommended March 15-April 1 March 15-April 1 1 foot 1
Horseradish 7a Not recommended March 15-April 1 March 15-April 1 1 foot 1
Horseradish 7b Not recommended March 15-April 1 March 15-April 1 1 foot 1
Horseradish 8a Not recommended Feb. 15-March 1 Feb. 15-March 1 1 foot 1
Horseradish 8b Not recommended Feb. 15-March 1 Feb. 15-March 1 1 foot 1
Horseradish 9a Not recommended Jan. 15-Feb. 1 Jan. 15-Feb. 1 1 foot 1
Horseradish 9b Not recommended Jan. 15-Feb. 1 Jan. 15-Feb. 1 1 foot 1
Horseradish 10a Not recommended Not recommended Not recommended Not recommended Not recommended
Horseradish 10b Not recommended Not recommended Not recommended Not recommended Not recommended
Horseradish 11a Not recommended Not recommended Not recommended Not recommended Not recommended
Horseradish 11b Not recommended Not recommended Not recommended Not recommended Not recommended

* Horseradish is a cool-weather herb that grows via crowns or roots. Plant them outside 4-6 weeks before the average last frost date in your area. Not recommended in tropical climates.