Horseradish can be grown when bought directly from a store, but there are a few things you need to consider before actually planting the roots into the ground. I will go through these points first, before showing you how to do it.
It is better to plant a Horseradish root when it is bought from a reputable source when the roots are still small and skinny. You can grow them directly from the store, but you need to know if it has been chemically treated, which could prevent it from growing when planted in the ground. You will soon know if your roots are growing in the summer when you either have green leaves growing out of the soil or you don’t. Either way, it’s still a good project to try out.
It’s better to use one that has a crown (the fat and flat part at the top) and a root (the skinny tapered part at the bottom). That said, Horseradish can grow from any piece of a chunk that has been put in the ground, but is better to use one that has both root and crown ends. It is also better to use a root that isn’t too dry.
The next thing you need to consider is where you want to grow your Horseradish. It is not advisable to grow them directly in your garden soil because they have a tendency to take over your garden and grow in places you don’t want them to. Even when you think you have removed all of the roots, they still seem to spread like weeds.
It is better to plant them away from your other plants, in their own area. You can plant them in their own raised bed, but it is much better to plant them in their own pot or container. Doing this will keep your Horseradish isolated and prevent them from spreading all over the soil.
How to grow store-bought Horseradish roots
- Start the process after the last frosty days have finished in spring.
- At the slimmer tapered end of the root, put a little 5cm cut at a 45-degree angle.
- Fill up a large pot or container (that has drainage holes at the bottom) with compost, to about a couple of inches below the rim.
- Place the root in the soil (with the skinny tapered end first and fat crown end at the top) on a 45-degree angle (not directly upright or lay down).
- Put soil on top, making sure the crown is no deeper than 2 inches, and then water the soil.
- Place the pot in full sun or in a partially shaded position.
- Keep the soil moist and fertilize in late spring or early summer.
- When the green leaves sprout up out the ground, remove any dead leaves and suckers or weeds growing.
- You will know when its time to harvest when the foliage starts to die off and the Horseradish has felt the frost a couple of times, around October or November.
It is much easier to grow Horseradish when they are bought as a young skinny root, but they can be grown directly from the store. There is a chance that they won’t grow, due to chemicals that they may have been treated with, but is definitely worth having a try.
Plant them in spring after the frosty days have finished, in a well-contained area of your garden or in a pot (so they don’t spread like weeds), in well-drained soil, look after them throughout summer, they will be ready for harvesting at the end of the year (after they’ve felt a couple of frosts), and you can replant what you don’t use for next years harvest.