How To Plant Horseradish Root [ Full Guide ]

Horseradish (Armoracia rusticana) is a perennial plant known for its pungent root, which is commonly used as a spicy condiment. Growing horseradish at home is a rewarding experience, as it allows you to enjoy its fresh, flavorful root for culinary use. In this comprehensive guide, you will learn how to plant horseradish root successfully, from understanding the plant and selecting the right planting location to preparing the soil, purchasing the root, and caring for the plant.

Quick Answer: How To Plant Horseradish Root

  1. Choose a suitable site – Select a location with well-draining soil and sufficient sunlight.
  2. Prepare the soil – Loosen the soil to a depth of 12-15 inches and amend it with organic matter.
  3. Obtain horseradish root – Purchase healthy, firm horseradish roots from a reputable source.
  4. Plant the root cuttings – Dig a trench and place the root cuttings at a 45-degree angle with the top bud 2 inches below the soil surface.
  5. Water and mulch – Water the newly planted roots and apply a layer of mulch to retain moisture and suppress weeds.
  6. Maintenance – Keep the soil consistently moist and control weeds, and harvest mature roots in the following year.

Follow these steps to cultivate robust horseradish plants and enjoy the harvest of fresh, potent roots.

Understanding Horseradish Root

Horseradish Plant Characteristics

Horseradish, a member of the Brassicaceae family, is a hardy perennial that produces large, coarse leaves and an elongated root, which is the main source of its culinary and medicinal value. When left undisturbed, the plant can grow up to 5 feet in height, with thick, sturdy stems and deep green, serrated leaves. In late spring to early summer, it also forms clusters of small white flowers. However, as horseradish is mainly grown for its root, the flowering is often regarded as a secondary aspect of the plant.

Culinary and Medicinal Uses

The pungent, spicy flavor of horseradish root makes it a popular addition to various dishes, condiments, and sauces. Additionally, it is known for its potential health benefits, such as being a good source of vitamin C and having antibacterial properties. The volatile oils present in horseradish have been utilized in traditional medicine for their decongestant and expectorant properties. The plant is also rich in antioxidants and may have potential anti-inflammatory effects.

Understanding the characteristics and uses of horseradish root is important in cultivating and utilizing this plant effectively.

Selecting The Right Planting Location

The success of growing horseradish largely depends on choosing an optimal planting location with the right environmental conditions. Here’s how to select the right site for planting horseradish:


Horseradish thrives in full sunlight, so it is crucial to select a site that receives at least 6-8 hours of direct sunlight daily. Ensure that there are no large trees or structures shading the area, as inadequate sunlight can lead to poor root development and decreased yield.

Soil Drainage

One of the most critical factors for planting horseradish is well-draining soil. The plant dislikes wet, waterlogged conditions, which can cause the roots to rot. Choose a location where water does not pool after heavy rain and where the soil drains effectively. Sandy loam or loamy soil types are ideal for horseradish cultivation.

Soil pH

Horseradish thrives in slightly acidic to neutral soil with a pH range of 6.0 to 7.5. Test the soil pH using a soil testing kit and amend it if necessary to achieve the optimal pH range for horseradish growth.

Space Considerations

Since horseradish can spread vigorously, it’s essential to allocate ample space for its growth. Plan for a space of 24-36 inches between each plant to allow for proper development and maintenance.

By taking these factors into account, you can identify the ideal location for planting horseradish to ensure a successful harvest of robust and flavorful roots.

Preparing The Soil For Horseradish

Creating a suitable soil environment is crucial for the successful growth and development of horseradish roots. Follow these steps to prepare the soil for planting horseradish:

Loosening the Soil

Start by loosening the soil to a depth of 12-15 inches using a garden fork or a tiller. This process helps improve soil aeration, drainage, and root penetration. Ensure that the soil is free from large clumps and debris, creating a loose and friable texture.

Amending the Soil

Incorporate organic matter, such as well-rotted compost or aged manure, into the soil to improve its fertility and texture. Organic matter enhances the soil’s moisture retention, nutrient content, and microbial activity, promoting healthy root development.

Fertilizing the Soil

Before planting, it’s beneficial to incorporate a balanced, slow-release fertilizer into the amended soil to provide essential nutrients for the initial growth stages. Opt for a fertilizer with a balanced NPK ratio, such as 10-10-10, and apply it according to the manufacturer’s instructions.

By preparing the soil meticulously, you can create an optimal growing environment for horseradish, promoting vigorous root establishment and abundant harvest.

Purchasing And Preparing The Horseradish Root

Selecting Healthy Roots

When purchasing horseradish roots, it’s vital to select healthy, disease-free specimens to ensure successful establishment and growth. Look for firm, plump roots free from soft spots, mold, or signs of damage. Ideally, purchase certified disease-free horseradish roots from reputable nurseries or garden centers.

Cutting and Preparing the Roots

Before planting, prepare the horseradish roots by cutting them into sections to create multiple planting units. Use a sharp, clean knife to divide the root into 6-8 inch sections, ensuring each cutting contains at least one bud or "eye" – the small, pale protuberances on the surface indicating potential growth points. These buds will develop into new shoots, facilitating the establishment of the plant.

Orientation and Planting Depth

When planting the root cuttings, ensure they are positioned correctly for optimal growth. Dig a trench approximately 8-10 inches deep and place the root cuttings at a 45-degree angle, with the top bud situated 2 inches below the soil surface. This angle encourages the new shoots to grow upwards, simplifying future care and harvesting.

Successfully planting horseradish root involves a series of meticulous steps, from selecting the right planting location and preparing the soil to purchasing and preparing the roots for planting. By understanding the unique characteristics of the horseradish plant and following the recommended techniques, you can establish a thriving horseradish patch and enjoy a bountiful harvest of flavorful roots. With careful attention to detail and a nurturing approach, you can cultivate robust horseradish plants and relish the culinary delights they offer.

Cutting And Dividing The Root For Planting

Horseradish (Armoracia rusticana) is a popular perennial plant known for its pungent roots that are commonly used as a condiment. It belongs to the Brassicaceae family and is native to Eastern Europe and Western Asia. Planting horseradish root is a relatively straightforward process that can be done by gardeners of all skill levels.

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Before you can plant horseradish, you need to start with a healthy rootstock. Purchasing horseradish root from a garden center or online nursery is a convenient option. Alternatively, if you have access to an established horseradish plant, you can dig up the roots and divide them. Here’s how to cut and divide the root for planting:

  1. Choose a mature horseradish plant: Look for a horseradish plant that is at least one year old. This ensures that the rootstock is well-established and ready for division.

  2. Dig up the plant: Use a shovel or garden fork to carefully loosen the soil around the horseradish plant. Gently lift the plant, being careful not to damage the roots.

  3. Rinse the roots: Once the plant is lifted, gently shake off any loose soil clinging to the roots. Rinse the roots thoroughly with water to remove any remaining dirt.

  4. Divide the roots: Using a sharp, clean knife, cut the horseradish root into smaller sections, making sure that each division has at least one healthy bud or shoot. The divisions should be around 6 to 8 inches long.

  5. Trim the tops: Trim the tops of the divisions, leaving about 1 to 2 inches of foliage above the root. This will help reduce water loss through transpiration and encourage new growth.

Planting Horseradish Root Successfully

Horseradish prefers a location with full sun and well-drained soil. Follow these steps to plant horseradish root successfully:

  1. Choose the planting location: Select a sunny spot in your garden or a raised bed that receives at least six hours of direct sunlight per day. Ensure that the soil is well-drained and has a pH between 6.0 and 7.5.

  2. Prepare the soil: Use a garden fork or tiller to loosen the soil to a depth of 12 to 15 inches. Remove any rocks, debris, or weeds from the planting area.

  3. Amend the soil: Although horseradish can tolerate a variety of soil conditions, it will thrive in loose, rich soil. Incorporate organic matter, such as compost or well-rotted manure, into the soil to improve its fertility and drainage.

  4. Dig planting holes: Dig holes that are around 4 to 6 inches deep and wide enough to accommodate the horseradish divisions. Space the holes about 2 feet apart to allow the plants enough room to grow.

  5. Plant the divisions: Place the horseradish divisions into the planting holes, ensuring that the leafy tops are at or just above ground level. Position them at a slight angle, leaning towards the direction you want the roots to spread.

  6. Backfill the holes: Gently backfill the holes with soil, taking care not to cover the foliage. Press the soil down firmly to eliminate any air pockets around the roots.

  7. Water thoroughly: After planting, water the horseradish plants thoroughly to settle the soil around the roots. Provide enough water to moisten the entire root zone.

Watering And Fertilizing Horseradish

Proper watering and fertilization are essential for the healthy growth of horseradish plants. Here’s what you need to know:

  1. Watering: Horseradish plants require regular watering, especially during dry spells. Aim to keep the soil consistently moist but not waterlogged. Water deeply once or twice a week, providing around 1 inch of water per week. Avoid overhead watering to prevent foliar diseases.

  2. Mulching: Applying a layer of organic mulch around horseradish plants is beneficial as it helps conserve soil moisture, suppresses weed growth, and regulates soil temperature. Use straw, wood chips, or compost as mulch, and spread it around the plants, leaving a small gap around the stem to avoid rot.

  3. Fertilization: Horseradish is a heavy feeder and requires regular fertilization to ensure optimal growth. Apply a balanced, slow-release fertilizer, such as a 10-10-10 or 14-14-14 formula, at the rate recommended on the package. Fertilize in early spring, just as new growth starts, and again in mid-summer to sustain growth.

  4. Avoid excessive nitrogen: While horseradish needs nitrogen for foliage growth, excessive nitrogen can promote leafy growth at the expense of root development. Be cautious not to over-fertilize with high-nitrogen fertilizers as it can result in smaller roots. Follow the recommended dosage on the fertilizer packaging.

Mulching And Weed Control

Mulching is an essential practice for horseradish cultivation, as it helps retain moisture, suppresses weeds, and improves soil health. Here’s how to mulch and control weeds effectively:

  1. Mulching: Apply a layer of organic mulch, such as straw, wood chips, or compost, around the base of the horseradish plants. Spread the mulch evenly, ensuring it is around 2 to 4 inches thick. Mulching helps prevent weed competition by blocking sunlight and also helps regulate soil temperature.

  2. Weed control: Horseradish plants can be vigorous, but they are susceptible to weed competition, especially during the early stages of growth. Regularly monitor the planting area and remove any weeds that sprout around the plants. Hand-pulling or using a garden hoe to cultivate the soil gently around the plants can help control weeds without damaging the root system.

  3. Herbicides: If the weed infestation is severe and manual removal is not sufficient, you can consider using herbicides specifically labeled for use in horseradish cultivation. Follow the instructions carefully, ensuring that both the herbicide and the application method are approved for use on horseradish.

Growing horseradish can be a gratifying experience for any gardener. Whether you are a culinary enthusiast looking to enhance your dishes or simply enjoy the beauty of this perennial plant, planting horseradish root is a simple and rewarding process. By following the steps outlined in this guide, you can ensure that your horseradish plants thrive and produce abundant, pungent roots that will elevate your meals and add a unique flavor to your dishes. From cutting and dividing the root to planting, watering, fertilizing, mulching, and controlling weeds, each step plays a crucial role in growing healthy horseradish plants. Happy planting and enjoy the flavors of this versatile herb!

Pruning And Supporting Horseradish

Horseradish (Armoracia rusticana) is a perennial plant that belongs to the Brassicaceae family. It is primarily cultivated for its pungent and spicy root, which is commonly used as a condiment or spice. Planting horseradish root is a rewarding and straightforward process, and with the right care, you can enjoy a bountiful harvest of this flavorful plant.

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Pruning and supporting horseradish plants are beneficial for their overall growth and productivity. Here are the essential steps to follow:

1. Choose The Right Location

Horseradish thrives in full sun or partial shade. Select a location in your garden that receives at least 6 to 8 hours of direct sunlight daily. Ensure the soil is well-drained and rich in organic matter. Avoid areas that are prone to waterlogging.

2. Prepare The Soil

Before planting horseradish root, prepare the soil by removing any weeds or grass. Loosen the soil to a depth of about 12 to 15 inches using a garden fork or tiller. Incorporate organic matter such as compost or well-rotted manure to improve soil fertility and drainage. Horseradish prefers slightly acidic soil with a pH range between 6 and 7.

3. Plant The Root Cuttings

Horseradish is typically grown from root cuttings rather than seeds. Obtain fresh, healthy horseradish roots from a reputable nursery or garden center. The ideal size for root cuttings is about 12 to 18 inches long and approximately 1 inch in diameter.

Dig a trench in the prepared soil that is deep enough to accommodate the root cuttings. Place the root cuttings horizontally in the trench, with the crown end facing upward. Ensure the cuttings are spaced about 2 to 3 feet apart to allow for proper growth and development.

4. Watering And Mulching

After planting, water the horseradish root cuttings thoroughly, ensuring the soil is evenly moist. Subsequently, provide regular watering to maintain soil moisture. However, avoid overwatering, as horseradish does not tolerate waterlogged conditions.

Applying a layer of organic mulch, such as straw or wood chips, around the base of the plants will help retain moisture, suppress weed growth, and regulate soil temperature. Aim to maintain a mulch layer that is about 2 to 3 inches thick.

5. Provide Support

Horseradish plants can grow to be quite tall, typically reaching heights of 2 to 3 feet. As they grow, they may become top-heavy and require additional support to prevent flopping or breaking.

Using garden stakes or trellises, gently tie the plants to the support structures to keep them upright. It is best to provide support early on during the plant’s growth to prevent root damage.

6. Fertilization

Horseradish is a moderately heavy feeder. To promote healthy growth and root development, it is recommended to fertilize the plants.

Apply a balanced, slow-release fertilizer to the soil around the plants in early spring, following the package instructions for dosage. Additionally, incorporate organic matter into the soil periodically, as it provides beneficial nutrients while improving soil structure.

Harvesting Horseradish Root

Harvesting horseradish root is an exciting and gratifying part of growing this pungent plant. Here are the steps to follow when it comes time to harvest:

1. Timing

Horseradish is typically harvested in fall when the leaves begin to die back and turn yellow. This is an indication that the plant has stored ample energy within its roots.

Allow the plant to grow undisturbed for approximately 8 to 10 months before harvesting. This period allows the roots to develop to their full potential.

2. Loosen The Soil

To make the harvesting process easier, gently loosen the soil around the horseradish plant using a garden fork or shovel. Be careful not to damage the roots while doing this.

3. Lift And Separate The Roots

After loosening the soil, carefully lift the horseradish plant from the ground. Shake off excess soil to expose the roots.

Separate the main root from the smaller lateral roots by cutting them away using clean and sharp pruning shears or a garden knife. The main root is typically larger and thicker than the lateral roots and is the most desirable for culinary use.

4. Replant Or Store

If you wish to continue growing horseradish, select some of the smaller lateral roots and replant them following the same planting steps described earlier in this article.

Alternatively, if you have harvested enough horseradish root for your needs, you can store the roots for later use. Proper storage ensures that the horseradish remains fresh and flavorful.

Preserving And Storing Horseradish

Preserving horseradish root allows you to enjoy its robust flavor long after the harvest season. Here are some methods for preserving and storing horseradish:

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1. Canning

Canning is a popular and effective method of preserving horseradish. Follow these steps to can horseradish:

  • Wash the harvested horseradish root thoroughly and remove any dirt or debris.

  • Peel the roots using a vegetable peeler or a sharp knife.

  • Grate or finely chop the peeled roots. The finer the texture, the more intense the flavor will be.

  • Place the grated horseradish in sterilized canning jars, leaving about half an inch of headspace.

  • In a separate bowl, mix white vinegar with a pinch of salt. Pour the vinegar mixture into the canning jars, ensuring the horseradish is completely submerged.

  • Seal the jars with sterilized lids and rings.

  • Process the jars in a boiling water bath for about 10 to 15 minutes.

  • Allow the canned horseradish to cool completely before storing them in a cool, dark place.

2. Freezing

Freezing horseradish is a simple and convenient method that preserves its flavor. Follow these steps to freeze horseradish:

  • Wash and peel the harvested horseradish root.

  • Grate the peeled roots or chop them into small pieces.

  • Place the grated or chopped horseradish into airtight containers or freezer bags.

  • Squeeze out excess air from the containers or freezer bags and seal them tightly.

  • Label the containers with the date and store them in the freezer.

  • Frozen horseradish can be stored for up to 3 to 4 months.

3. Vinegar Solution

Another method for preserving horseradish root involves creating a vinegar solution. Follow these steps:

  • Wash and peel the horseradish root.

  • Grate or finely chop the peeled roots.

  • In a bowl, mix equal parts of white vinegar and water. You can also add a pinch of salt for flavor.

  • Place the grated or chopped horseradish in sterilized glass jars.

  • Pour the vinegar solution into the jars, ensuring the horseradish is completely covered.

  • Seal the jars tightly and store them in the refrigerator.

  • The horseradish stored in vinegar solution can last for several months when refrigerated.

Troubleshooting Common Horseradish Planting Issues

Although horseradish is generally a hardy and low-maintenance plant, it can encounter some common issues during the planting process. Here are a few problems you may encounter and how to troubleshoot them:

1. Root Rot

Root rot can occur when the soil is waterlogged or lacks proper drainage. To prevent root rot, ensure the soil is well-drained and improve drainage by adding organic matter.

Avoid overwatering the horseradish plant and make sure it is planted in an area with proper sunlight exposure.

2. Pests

Horseradish plants are relatively pest-resistant, but they can still be susceptible to some pests. Aphids, flea beetles, and cabbage root maggots are some common pests that can affect horseradish.

To address pest issues, inspect your plants regularly and take action if infestations are observed. Use organic insecticides or companion planting techniques to deter pests.

3. Diseases

Horseradish plants can be susceptible to fungal diseases such as powdery mildew and downy mildew. To prevent these diseases, ensure proper air circulation around plants by spacing them adequately.

Avoid overhead watering and provide irrigation at the base of the plants to minimize moisture on the leaves. If mildew or other diseases are present, use appropriate fungicides according to product instructions.

4. Lack Of Growth

If your horseradish plants are not growing as expected, it may be due to poor soil fertility or inadequate sunlight.

Test the soil to assess nutrient levels and adjust accordingly. Ensure your horseradish plants receive at least 6 to 8 hours of direct sunlight daily. If necessary, relocate the plants to a sunnier location.


Planting horseradish root is a straightforward process that can be accomplished with a little planning and care. Providing the right support, pruning, and maintenance will ensure healthy growth and a bountiful harvest. Remember to harvest the roots at the appropriate time, and preserve any excess horseradish through canning, freezing, or using a vinegar solution. With the troubleshooting tips provided, you will be able to address common issues that may arise, resulting in successful horseradish cultivation. Enjoy the flavorful and versatile horseradish in your culinary creations for years to come.


What Type Of Soil Is Best For Planting Horseradish Root?

Horseradish thrives in well-draining, sandy soil with a pH range of 6.0-7.0. It is important to avoid heavy clay soil or soil with high nitrogen levels, as this can result in poor root development.

When Is The Best Time Of Year To Plant Horseradish Root?

Horseradish root should be planted in the early spring or fall, when the soil is cool and moist. Planting in the summer can result in stressed or stunted plants.

How Deep Should I Plant The Horseradish Root?

Horseradish root should be planted at a depth of 4-6 inches. The top of the root should be just below the soil surface. Make sure to leave enough space between plants, as they can spread rapidly.

How Often Should I Water My Horseradish Plants?

Horseradish plants require consistent moisture, so water deeply once or twice a week to keep the soil consistently moist. However, do not allow the soil to become waterlogged as this can lead to root rot.

How Long Does It Take For Horseradish To Be Ready For Harvest?

Horseradish root will be ready for harvest in about 8-12 months, depending on growing conditions. The roots are typically harvested in the fall and can continue to be harvested for several years if left in the ground.