blue spirea; blue mist shrub
A flowering plant (Caryopteris divaricata) known for its blue flowers. The name is usually written in katakana.
Blue spirea is blooming in the garden.
Blue mist shrub produces blue flowers in autumn.
Katakana spelling is common for this plant name; usually written in kana.
Kanji spelling; rarely used in practice.
Abbreviated kanji spelling; very rare.
The name かりがねそう (雁金草) literally means 'wild goose plant', likely from the shape of the flower resembling a flying goose. The exact origin is uncertain.