Alphabetical Plant Listing

Eutrema japonicum (Wasabi)

Wasabi, Japanese Horseradish, Alliaria wasabi, Cochlearia wasabi, Eutrema wasabi, Wasabia japonica, Wasabia wasabi


Grown for its remarkable rhizome, Eutrema japonicum (Wasabi) is a semi-aquatic perennial forming a thick rhizome and boasting long-stemmed, rounded, kidney-shaped green leaves. Elegant 4-petaled white flowers are carried above the foliage. All parts of this Japan native are edible. Both leaves and flowers can be eaten (cooked) while you wait for the rhizome to develop to harvest. It takes about 15-24 months to produce a good fleshy rhizome. Dig up the rhizome in the second and third year and use it fresh at any time. Finely grated, it is prepared into a fresh green paste which is used as a condiment in Japan. It may be stored in a sealed plastic bag in the refrigerator for up to 2 months. Predominantly shade loving with high moisture needs, Wasabi is suitable for bogs and water gardens. The best quality rhizomes are produced from plants growing in semi-shade in clear running spring water at a temperature between 50-55°F (10-13°C). Wasabi is intolerant of heat and will stop growing in temperatures over 80°F (26°C).

  • Grows up to 6-12 in. tall (15-30 cm) and 6-9 in. wide (15-22 cm).
  • Performs best in humus-rich, consistently moist soils in partial shade. Do not let the soil dry out between waterings. Full shade is tolerated.
  • Keep an eye out for leaf spot, root rot, rhizome rot and petiole blight.
  • Propagate by seed sown in spring or by division.
  • Native to eastern Asia, Japan.

Buy Eutrema japonicum (Wasabi)

Requirements

Hardiness 8 – 10
Plant Type Herbs, Perennials
Exposure Partial Sun, Shade
Season of Interest Spring (Mid,Late)
Summer (Early,Mid,Late)
Fall
Height 6" – 1' (15cm – 30cm)
Spread 6" – 9" (15cm – 22cm)
Spacing 6" – 9" (15cm – 22cm)
Water Needs Average, High
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive
Tolerance Wet Soil
Garden Uses Beds and Borders, Patio and Containers, Ponds and Streams
Garden Styles Informal and Cottage

Buy Plants


Sk, Mannewaar, Flickr, Maljalen, Fadhli Adnan, Shutterstock

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 8 – 10
Plant Type Herbs, Perennials
Exposure Partial Sun, Shade
Season of Interest Spring (Mid,Late)
Summer (Early,Mid,Late)
Fall
Height 6" – 1' (15cm – 30cm)
Spread 6" – 9" (15cm – 22cm)
Spacing 6" – 9" (15cm – 22cm)
Water Needs Average, High
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive
Tolerance Wet Soil
Garden Uses Beds and Borders, Patio and Containers, Ponds and Streams
Garden Styles Informal and Cottage

Plant Calculator

How many Eutrema japonicum (Wasabi) do I need for my garden?

%
ft
ft

Your Shopping List

Plant Quantity
Eutrema japonicum (Wasabi)

Find your Hardiness Zone

Find your Climate Zone

Find your Heat Zone

Join Gardenia.net

Create a membership account to save your garden designs and to view them on any device.

Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

Join now and start creating your dream garden!

Create a New Collection

Optional. For your reference.


Move Selected Plants to a Different Collection


Delete Collection

This field is required.