noun
trailing spurge; Euphorbia humifusa
A low-growing annual plant in the spurge family, native to East Asia. Often found in fields and roadsides.
道端にニシキソウがたくさん生えていた。
A lot of trailing spurge was growing by the roadside.
The name ニシキソウ (錦草) literally means 'brocade grass', likely referring to the plant's appearance. The exact derivation is uncertain.