5 Easy Steps on How to Grow Wasabi

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how to grow wasabi

Have you ever felt curious about Wasabi? If yes, then save this post!

Wasabi is a famous green Japanese condiment typically served with sushi. It has a strong flavor and is created from the Wasabi’s stem. The stem is grated to create the paste and mixed with other ingredients to achieve the final product.

But here’s the most important thing if you’re interested in learning how to grow Wasabi. Wasabi can be a tough plant to grow. This plant prefers cool and shady places, especially near streams or rivers. 

But despite its tough growing conditions, growing Wasabi is still important, especially for the sushi industry and Japanese cuisine.

What are the requirements in growing Wasabi?

Before you learn how to grow Wasabi, it’s a must that you know its growing conditions. Here, we’ll talk about three things; ideal temperature, soil pH, and water management for wasabi growth.


As we said earlier, Wasabi prefers a cool and shady environment. And with this in mind, you need to ensure that the temperature range you’ll give to your Wasabi is between 50-70°F (10-21°C). Temperature below this range can kill your Wasabi, and higher temperature can make it dormant.

Soil pH and nutrient requirements

Regarding soil pH, Wasabi thrives in the 6.0-7.0, a slightly acidic. You also need to plant in well-draining soil rich in organic matter, such as straw, leaves, and grass clippings. Meanwhile, for its nutrient requirements, Wasabi needs sufficient amounts of nitrogen, potassium, and phosphorus for optimal growth.

Proper drainage and water management

Wasabi requires consistently moist soil but not too soggy or drenched. Excessive water can lead to root rot. Likewise, improper drainage can cause its leaves to turn yellow and can even lead to death.

How to grow Wasabi?

There are two ways how to grow Wasabi; from seeds and through stem cuttings.

Growing from seeds

If you’re up for a real challenge, growing Wasabi from seeds is for you. It’s important to know that growing from seeds is harder because of their low germination rate. But still, it’s great to try, so here’s the process.

Step 1. Get fresh wasabi seeds.

It would be nice to obtain fresh wasabi seeds as their viability decreases with age.

Step 2. Prepare your potting soil.

Remember, Wasabi prefers well-drained soil with a slightly acidic pH between 6.0-7.0. You also need to mix in organic matter like peat moss or compost to improve the structure of the soil.

Step 3. Sow the seeds.

Plant the wasabi seeds on the soil’s surface and lightly press them into the soil. After that, you must thoroughly cover it with a thin layer of soil and water.

Step 4. Maintain the soil’s moisture.

Keep the soil’s moisture but not waterlogged to prevent root rot. You might need to water regularly, but avoid getting water on the leaves.

Step 5. Give adequate light.

Wasabi requires a cool and shady environment, but it still needs adequate light to germinate. You can put the seeds in a bright, indirect light.

Step 6. Maintain temperature.

Keep the temperature between 50-70°F (10-21°C) to promote germination.

Step 7. Check for germination.

You must bring patience here because germination can take several weeks to a few months. Keep the soil consistently moist and monitor for sprouts.

It’s important to note that growing Wasabi from seeds can be difficult, and success is not guaranteed. Cuttings from mature plants are a more reliable propagation method, and that’s what our next discussion is about.

Growing from cuttings

Growing Wasabi through stem cuttings is a more reliable method of propagation than growing from seeds. Here is a guide on how to grow Wasabi from cuttings:

Step 1. Obtain cuttings.

Get cuttings from a mature Wasabi plant. Do it during spring or early summer. Your cuttings should be about 4-6 inches long and have at least one node.

Step 2. Prepare your cuttings.

Get rid of the leaves from the bottom half of your stem cuttings. After that, dip the cut end into the rooting hormone to promote root growth.

Step 3. Plant the cuttings.

You need to plant the stem cuttings in a well-drained soil mixture rich in organic matter. Then, place the cuttings in a shady area.

Step 4. Maintain moisture.

Maintaining the soil consistently moist but not soggy is crucial in growing Wasabi. Again, you might need to water regularly, but avoid getting water on the leaves.

Step 5. Provide adequate light.

This is the same as the steps above on growing from seeds. You can follow it from step 4 to step 7.

By using and following these steps, you can successfully grow Wasabi from cuttings and produce a mature plant for propagation or for its stem, which is used to make Wasabi paste. 

What are the factors that affect propagation success?

Part of learning how to grow Wasabi is to know the different factors that can affect its propagation success. Look at these factors.

a. Growing conditions. 

Proper growing conditions, like adequate light, moisture, and temperature, are critical for successful propagation. 

b. Quality of cuttings.

Ensure that you use healthy and disease-free cuttings from mature plants.

Rooting hormone. The use of rooting hormone can increase the chance of germination.

c. Soil quality.

Make sure you use well-drained soil mixed with organic matter to provide the proper growing conditions.

d. Water management. 

Proper water management is crucial for Wasabi’s growth. Do not overwater or underwater your plant.

How to care for your wasabi plant?

Aside from other growing conditions discussed above, here are other ways to manage your Wasabi.

Controlling pests and diseases

Wasabi plants are relatively pest-free, but a few pests can be your problem. It includes the following.

  • Slugs and snails
  • Aphids
  • Thrips
  • Whiteflies

Fertilization and soil amendment practices

Aside from having slightly acidic soil, you must also carry out fertilization and soil amendment practices. 

Here are some of our recommendations.

  • Take a soil test to identify the nutrient levels in your soil and make any necessary adjustments.
  • Feed it with a slow-release fertilizer formulated for acidic soils to provide Wasabi plants with the necessary nutrients.
  • Avoid over-fertilization because it can lead to excessive growth and decreased Wasabi production.
  • Do not forget to add organic matter to improve the soil structure and fertility.

Grow Wasabi today!

Learning how to grow Wasabi can be intimidating at first. We can agree on that, but we can also say that you can surely grow your own with the proper knowledge about its nature, demands, and processes.

Just do not forget that Wasabi prefers slightly acidic and moist soil, 50-70°F (10-21°C) temperature, and a shady environment. And when you’re ready to put your knowledge to the test, feel free to go back to this guide to start the process.

Remember, growing Wasabi in a sustainable manner is important to promote biodiversity.

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