Wasabi Plant (Wasabia japonica)

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Wasabi Plant Plant Care

Wasabia japonica (Miq.) Matsum.

This plant is known for its heart-shaped, glossy green leaves and originates from Japan. Plant collectors are drawn to Wasabia japonica for its unique culinary uses, as the roots are used to make the famous spicy condiment wasabi.

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Water

Every 3–7 days

Light

Partial shade to full shade

Temp

45–65°F

Humidity

50–70%

What Is the Wasabi Plant?

Wasabi Plant (Wasabia japonica) belongs to the Brassicaceae family within the Wasabia genus. Wasabi Plant is native to Japan, the Russian Far East including Sakhalin, and the Korean Peninsula. Wasabi Plant is also known as Wasabi, Japanese horseradish.

Wasabi Plant displays a low rosette, clumping growth habit, reaching up to 1 inches tall with a spread of approximately 1 inches. Wasabi Plant produces small white flowers on tall stalks.

Leaf size: approximately 0 inches.

How Often Should You Water a Wasabi Plant?

Wasabia japonica requires watering every 3–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Watering Frequency

Every 3–7 days

Let soil partially dry between waterings

What Light Does the Wasabi Plant Need?

Wasabi Plant thrives in partial shade to full shade light conditions. The optimal light range is 0–0 lux. Avoid placing Wasabi Plant in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Light Requirement

Partial shade to full shade

0–0 lux

What Temperature and Humidity Does the Wasabi Plant Prefer?

Wasabia japonica grows best at temperatures between 45°F and 65°F. Wasabi Plant prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Temperature

45–65°F

Humidity

50–70%

What Soil Mix Works Best for a Wasabi Plant?

Moist, well-draining soil rich in organic matter. Good drainage is essential for Wasabi Plant to prevent waterlogging, which leads to root rot and fungal issues.

How Do You Repot a Wasabi Plant?

Repot every 1-2 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

How Do You Propagate a Wasabi Plant?

Wasabi Plant can be propagated through seeds, division of rhizomes.

Fertilizing

Every 2 months

During the growing season

Is the Wasabi Plant Toxic to Pets and Children?

Non-Toxic

Non-toxic to humans and pets

What Pests and Diseases Affect the Wasabi Plant?

Wasabi Plant is susceptible to aphids, cabbage worms, flea beetles. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

What USDA Hardiness Zone Does the Wasabi Plant Need?

Wasabi Plant grows outdoors in USDA Zone 7a – 10b. Native to Japan, the Russian Far East including Sakhalin, and the Korean Peninsula, Wasabi Plant is adapted to warm climates. In cooler regions, grow Wasabi Plant as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 7a – 10b

Keep exploring plants

Wasabi Plant is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.

It belongs to the Wasabia genus — compare its care with other Wasabia species on PlantoScan.

Wasabi Plant tolerates low-light rooms and shaded spots — browse the full list of low-light plants.

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