Translation guide
A plant with aromatic leaves used in traditional medicine and sometimes in cooking. The most common Japanese equivalent is 菖蒲 (しょうぶ), but this can also refer to the iris, so context matters.
Referring to the sweet flag plant itself, especially in botanical or herbal contexts.
Sweet flag is a plant that grows in wetlands.
Scientific name, used in academic or botanical contexts.
Acorus calamus is known as a medicinal plant.
Referring to the dried root or rhizome of sweet flag, often used in traditional remedies.
Referring to the use of sweet flag leaves in Japanese traditions, such as the Boy's Festival (Tango no Sekku).
In the context of the Boy's Festival, 菖蒲 leaves are used in baths (菖蒲湯) or as decorations. The word itself is the same as the plant.
On Children's Day, we take a sweet flag bath.
A bath infused with sweet flag leaves, traditionally taken on May 5th.
The word 菖蒲 (しょうぶ) can refer to both sweet flag (Acorus calamus) and Japanese iris (Iris ensata). In many contexts, especially in gardening or flower-related topics, 菖蒲 means iris. To avoid confusion, you can specify 菖蒲（ショウブ）for sweet flag or use the scientific name if needed.
Sweet flag rhizome is used in Chinese herbal medicine.
菖蒲湯は邪気を払うと言われています。
Sweet flag baths are said to ward off evil spirits.