How to Grow Horseradish Plant Outdoors

Horseradish (Armoracia rusticana) is a versatile and flavorful plant that can add a kick to your culinary creations. Its pungent and spicy roots are commonly used as a condiment, especially in the form of horseradish sauce. While you can easily find horseradish in supermarkets, growing your own outdoors can be a rewarding experience. In this article, we will guide you through the process of growing horseradish plants outdoors.

Choosing the Right Location

Before you start planting horseradish, it’s important to choose the right location. Horseradish thrives in full sun but can tolerate partial shade. It prefers well-draining soil with a pH level between 5.5 and 7.5. Make sure the area you choose has enough space for the plant to spread, as horseradish can grow quite vigorously.

Obtaining Horseradish Roots

The best way to start growing horseradish is by obtaining healthy root cuttings from a nursery or garden center. You can also ask fellow gardeners for divisions from their established plants. When selecting horseradish roots, make sure they are firm and free from blemishes or signs of decay.

Planting Horseradish

Prepare the soil: Begin by loosening the soil with a garden fork or tiller to a depth of about 12 inches (30 cm). Remove any weeds or debris and mix in compost or well-rotted manure to improve fertility.
Cut the roots: Cut the horseradish roots into pieces that are about 6 inches (15 cm) long. Each piece should have at least one bud or “eye.”
Dig planting holes: Dig planting holes that are deep enough to accommodate the root cuttings. The holes should be about 2 inches (5 cm) deep and spaced at least 18 inches (45 cm) apart.
Plant the root cuttings: Place each root cutting into a planting hole, making sure the bud or eye is facing upward. Cover the roots with soil, leaving the top bud exposed.
Water thoroughly: After planting, water the horseradish plants thoroughly to help settle the soil around the roots.

Caring for Horseradish Plants

Horseradish plants require regular care to ensure healthy growth. Here are some essential tips:

Watering

Horseradish plants need consistent moisture, especially during dry spells. Water deeply once a week, providing about 1 inch (2.5 cm) of water. Be careful not to overwater, as excessive moisture can lead to rotting.

Mulching

Applying a layer of organic mulch around the base of the plants can help conserve moisture, suppress weeds, and regulate soil temperature. Use materials like straw, wood chips, or compost and spread them about 2 inches (5 cm) thick.

Fertilizing

Horseradish plants benefit from regular fertilization to promote healthy growth. Apply a balanced fertilizer, such as a 10-10-10 formula, every four to six weeks during the growing season. Follow the package instructions for application rates.

Pruning

To encourage strong root development, it’s important to remove any flower stalks that appear on your horseradish plants. Flowering diverts energy away from root growth. Simply cut off the flower stalks as soon as you notice them.

Controlling Weeds

Regular weeding is essential to keep your horseradish patch free from competition for nutrients and water. Be careful not to disturb the shallow roots of the horseradish plants while weeding.

Harvesting Horseradish

Horseradish roots are typically ready for harvest in the fall, around six to eight months after planting. To harvest, carefully dig up the entire plant, starting from the outer edges and working your way inward. Use a garden fork or shovel to loosen the soil and gently lift the roots.

After harvesting, wash the roots thoroughly to remove any soil. Trim off the leaves and smaller roots, leaving only the main root intact. You can store horseradish roots in a cool, dark place for several months.

Conclusion

Growing horseradish plants outdoors can be a fun and rewarding experience. By choosing the right location, planting healthy root cuttings, and providing proper care, you can enjoy a bountiful harvest of pungent and flavorful horseradish roots. From homemade sauces to spicy condiments, your homegrown horseradish will add a delicious kick to your culinary creations. So why not give it a try and start growing your own horseradish today?