When to plant Horseradish
Where the average last spring freeze is April 10, USDA's table says to plant horseradish from Mar 10 to Apr 10. The planting dates depend on your average frost dates. Enter a ZIP code to get yours, or read the USDA table below. The dates are for setting out plants.
| Average last freeze | Plant |
|---|---|
| Jan 30 | Not listed |
| Feb 8 | Not listed |
| Feb 18 | Not listed |
| Feb 28 | Not listed |
| Mar 10 | Not listed |
| Mar 20 | Not listed |
| Mar 30 | Mar 1 – Apr 1 |
| Apr 10 | Mar 10 – Apr 10 |
| Apr 20 | Mar 20 – Apr 20 |
| Apr 30 | Apr 1 – 30 |
| May 10 | Apr 15 – May 15 |
| May 20 | Apr 20 – May 20 |
| May 30 | May 1 – 30 |
| June 10 | May 15 – June 1 |
| Average first freeze | Plant by |
|---|---|
| Aug 30 | Generally spring-planted |
| Sept 10 | Generally spring-planted |
| Sept 20 | Generally spring-planted |
| Sept 30 | Generally spring-planted |
| Oct 10 | Generally spring-planted |
| Oct 20 | Generally spring-planted |
| Oct 30 | Generally spring-planted |
| Nov 10 | Generally spring-planted |
| Nov 20 | Generally spring-planted |
| Nov 30 | Generally spring-planted |
| Dec 10 | Generally spring-planted |
| Dec 20 | Generally spring-planted |
Source: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. The bulletin scan.
Updated