Growing Wasabi At Home: A Complete Guide

Written by: Lars Nyman

Growing Wasabi

Growing Wasabi

Growing the plant Wasabi is a fun and rewarding experience. It's celebrated for its spicy and zesty flavor, used to make condiments to go with sushi and other Japanese dishes, and has been said to have properties that help with digestion and cardiovascular health. The herb needs warm, moist soil and plenty of shade, making it an enjoyable and easy gardening task. Growing Wasabi is guaranteed returns of delicious and flavorful rewards!

Growing Wasabi At Home: A Complete Guide

1. Understand Wasabi Basics

Wasabi is a Japanese root vegetable known for its spicy, horseradish-like flavor. Growing it at home requires specific care and conditions.

2. Choose the Right Location

Select a shady spot in your garden or a suitable container. Ensure the soil is rich, moist, and well-draining.

3. Obtain Wasabi Clones or Rhizomes

Order wasabi clones or rhizomes from reputable suppliers. They are the root pieces used for propagation.

4. Prepare the Planting Area

Amend the soil with organic matter, such as compost, to ensure an ideal growing environment for your wasabi plants.

5. Plant Wasabi

Plant clones or rhizomes in pre-dug holes, spacing them adequately. Cover the roots with soil, ensuring they are well cared for.

6. Maintain Proper Moisture Levels

Keep the soil consistently moist by watering frequently. Ensure proper drainage to prevent waterlogging.

7. Provide Shade and Cool Environment

Wasabi plants thrive in cooler temperatures. Create shade using natural or artificial means, protecting them from direct sunlight.

8. Fertilize Regularly

Apply a balanced, slow-release fertilizer every few weeks to provide the necessary nutrients for healthy growth.

9. Control Pests and Diseases

Monitor your plants regularly for pests like aphids or slugs. Consider using organic or natural pest control methods to protect your wasabi.

10. Harvest Wasabi

Depending on the variety, harvest wasabi after approximately 12-18 months. Harvest the rhizomes carefully and store them appropriately.

Tools and Supplies Needed:

  • Potting soil
  • Compost
  • Wasabi clones or rhizomes
  • Gardening tools (shovel, trowel, etc.)
  • Watering can or hose
  • Shade cloth or umbrella
  • Slow-release fertilizer
  • Pest control methods (organic preferred)

Follow this guide to successfully grow your own delicious and authentic wasabi at home. Enjoy the satisfaction of harvesting and incorporating fresh wasabi into your culinary creations!

Ah, wasabi, that beloved condiment for sushi, sashimi, and so much more! Whether you’re a novice gardener or an experienced plant-wrangler, you can learn how to grow wasabi at home.

What Is Wasabi?

Wasabi (Wasabia japonica) is a root-based vegetable native to Japan. The root is typically grated and historically served with raw fish dishes. Wasabi’s spiciness is delicious and its aroma is unique. It’s often sold as a powder, but its genuine flavor comes from the freshly peeled and grated root.

Pick The Right Plant

Before getting started, it’s important to select the right plant. Wasabi plants are cold- and damp-loving types of horseradish. While some other horseradish species can be grown in similar environments, they won’t give the same flavor as wasabi.

Furthermore, just like other types of vegetables, wasabi plants are available in numerous varieties. Look for plants with the scientific name “Wasabia japonica” to be sure of a wasabi flavor.

Create The Right Environment

Wasabi grows best in partial shade with temperatures between 62 and 68 degrees Fahrenheit during the day. However, it’s important not to let the temperature drop below 45 degrees Fahrenheit—the plant will become dormant and can die if exposed to freezing temperatures for too long.

As for humidity, wasabi loves moisture but cannot handle being in standing water. You’ll need to keep a steady but not excessive amount of moisture in the soil. The soil should stay damp but not soggy.

If your garden experiences long, dry summers, make sure to water regularly. You can also place a shelter over the plant to hold in moisture.

Plant The Wasabi

Wasabi prefers soils that are high in organic matter, with a pH of 6.5 to 7. Plant individual rhizomes a few inches in the ground and about 6-8 inches apart. In colder soils, you may need to wait until after the last frost to plant.

Fertilize Regularly

Regular fertilizing is essential for successful wasabi cultivation. You should apply a balanced fertilizer in early spring and then alongside four times a year—following the directions on the packaging.

Harvest Time

Wasabi takes several months to mature and ready for harvest. Depending on the variety and the soil, it can take anywhere from nine months to two years for the rhizomes to reach the right size. The ideal size is two inches in diameter and a few inches in length.

Once you’ve harvested the rhizomes, you can grate them for the freshest wasabi flavor. Collect all of the leaves, too, so long as there are no signs of disease or damage. Wasabi greens can be eaten on their own or used in salads and other cooked dishes.


Growing wasabi at home requires patience and a little know-how. And it’ll be worth it in the end for its delicious flavor, pleasing aroma, and numerous uses in various dishes.

Frequently Asked Questions (FAQ) about Growing Wasabi at Home

1. Can I grow Wasabi at home?

Yes, you can absolutely grow Wasabi at home! Although it's a challenging plant to cultivate, with the right knowledge and care, you can successfully grow this unique and flavorful herb in your own garden or even indoors.

2. Where can I buy Wasabi seeds or plants?

Wasabi plants are not commonly available as seeds but can be purchased as young plants or rhizomes. Look for a reputable nursery or online supplier that specializes in growing exotic herbs like Wasabi. Make sure to source from a trusted vendor to ensure the best quality and authenticity.

3. What are the ideal growing conditions for Wasabi?

Wasabi thrives in cool, shady environments with temperatures ranging between 45°F and 70°F (7°C and 21°C). It prefers well-drained soil rich in organic matter, with a pH level between 6 and 7. Additionally, ensuring high humidity levels and providing plenty of moisture is crucial for successful Wasabi cultivation.

4. How much sunlight does Wasabi need?

While Wasabi prefers shaded spots, it still requires some filtered sunlight to grow optimally. Partial shade or filtered light for 4-6 hours a day is typically recommended for healthy plant development. Avoid exposing the plant to direct sunlight, especially during the hot summer months.

5. How often should I water my Wasabi plant?

Consistent moisture is vital for nurturing Wasabi plants. Aim to keep the soil consistently damp, but not waterlogged. Check the soil moisture regularly, and water whenever it starts to feel slightly dry. Mulching around the plants can help retain moisture and provide a more stable soil temperature.

6. How long does it take for Wasabi to mature?

Patience is key when growing Wasabi as it is a slow-growing herb. On average, it takes around 18 to 24 months for a Wasabi plant to reach maturity. However, you can usually begin harvesting small amounts of leaves after approximately 12 to 18 months.

7. Can I grow Wasabi indoors in pots or containers?

Yes, you can successfully grow Wasabi in containers or pots indoors, given the right conditions. Ensure the container is wide and deep enough to accommodate the plant's long taproot. Provide adequate humidity, preferably with a humidifier or by placing a tray filled with water near the plant, to mimic its preferred cool, moist environment.

8. How do I harvest Wasabi?

When harvesting Wasabi, wait until the leaves are at least 6 inches tall before selectively plucking individual leaves or stems from the outer edges. To harvest the rhizome, gently dig around the base of the plant, being careful not to damage the main root system. Harvest only what you need, allowing the plant to continue growing and producing.

Remember, growing Wasabi at home requires commitment and attention to detail. By following the proper guidelines and providing the ideal growing conditions, you can enjoy the unique and zesty taste of fresh Wasabi right from your garden.

Growing Wasabi is an incredibly rewarding experience! Its unique, spicy flavor is not found in any other plant, and it has a variety of different uses in medicine and cooking. Plus, it's easy to grow and takes up very little space. No matter your experience level with gardening, you can feel successful growing and harvesting your own Wasabi!

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