Q.
Will container growing horseradish survive winter outside?
I live in Muskoka, Ontario, Canada. If I put my horseradish in containers this fall will it survive our winter?
A.
GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on September 5, 2019
Your average lowest temperature is -10.5 degrees Celsius (13.1 degrees Fahrenheit). Horseradish is hardy to zone 3 or about -40 degrees F. So it looks like you could grow it in a container. I would still cover it with hay or mulch during January at least.
https://www.gardeningknowhow.com/edible/herbs/horseradish/harvesting-horseradish-root.htm
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