Q.Horseradish Roots Split And Deformed
I just dug up my 2 year old Horseradish plants and was disappointed with the results I found. The roots are all split and deformed. There is not enough good root to do any processing after cleaning. I suspect it is a fungus of some kind. The two plants were planted in different planter boxes (4′ X 4′). My Tomato plants last season (2020) suffered the same type of malady even though they were planted in different boxes at the other end of the garden area. Do you have any ideas what could be done to fix the soil in the garden boxes for future plantings? I have enclosed photos of the Horseradish Roots.
Certified GKH Gardening Expert
You could solarize your soil to destroy any disease-causing organisms. It also wouldn't hurt to get soil samples to see what nutrients may be missing. If you are in a hurry, you can always replace the soil with new. Make sure it is not soil from your garden, but lightweight soil for containers.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm