Eutrema japonicum, Wasabia japonica

Wasabi, Japanese Horseradish
Family: Brassicaceae
Origin: Japan
USDA Zone: 8-10?

Ethnomedical plant.
Plants marked as ethnomedical and/or described as medicinal, are not offered as medicine but rather as ornamentals or plant collectibles.
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Subtropical or temperate zone plant. Mature plant cold hardy at least to 30s F for a short time

Eutrema japonicum grows naturally along stream beds in mountain river valleys in Japan. It is green, has an extremely strong flavor.

It favours a moist, humus-rich soil and a semi-shaded location. It is very quick-growing and has a large attractively round kidney-shaped leaf resembling an Asarum and a smallish rather elegant white flower on a whiskery stem.

Link to this plant:

https://toptropicals.com/catalog/uid/eutrema_japonicum.htm