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Photo: CC BY-SA 3.0 (via Wikimedia Commons)

Fish Mint

Houttuynia cordata

Also known as Chameleon Plant, Heartleaf, Fish Wort, Rainbow Plant, Dokudami

At a glance
Family
Saururaceae (lizard's tail family)
Type
Herbaceous perennial
Parts used
Leaves, and occasionally the rhizome
Size
6 to 12 inches tall, spreading steadily by underground runners
Bloom
Small greenish-yellow flower spikes wrapped in four white bracts, in late spring to summer
Habitat
Damp shady ground, streambanks, ditches, and wetland margins across East and Southeast Asia
Acquisition
Grow or buy

Key benefits

Traditionally aids digestion
Used to clear heat and toxins
Supports respiratory comfort
Antioxidant-rich leafy green

Traditional uses

Long before it appeared in any garden catalog, fish mint was growing wild in the damp lowlands of Vietnam, southern China, Korea, and Japan, where cooks and healers treated it as one and the same plant. In traditional Chinese medicine it is called yu xing cao, the fish-smell herb, and has been used for generations to help clear heat and toxins from the body, particularly around the lungs, and to support the skin during minor irritations. In Vietnam it is rau diep ca, a everyday table herb eaten raw alongside noodles and grilled meats, valued as much for cooling the body in hot weather as for its bracing flavor. Korean and Japanese herbalists have likewise dried the leaves for centuries into a humble household tea, dokudami-cha, brewed simply to support digestion and everyday wellness.

How to grow & use it

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Pairs well with
  • Mint
  • Cilantro
  • Lemongrass
Substitutes
  • Cilantro
  • Perilla leaf
Choose it when

For the herb that smells like the riverbank and tastes like it cools the whole body down.

Did you know?

Crush a leaf between your fingers and you will understand the name at once, it releases a distinct fishy aroma, which is exactly why Vietnamese cooks prize it as the herb that makes fish and meat dishes taste cleaner and brighter.

Safety

Fish mint is generally fine as a food, though large amounts can cause mild stomach upset in some people. Those taking blood pressure or immune-suppressing medications should be mindful of its physiological effects.