noun
scarlet sage; red salvia
Refers specifically to Salvia splendens, a common ornamental plant with bright red flowers. In everyday Japanese, サルビア almost always means this species.
公園にサルビアがたくさん咲いている。
Many scarlet sage plants are blooming in the park.
サルビアの赤い花が夏の花壇を彩る。
The red flowers of the scarlet sage brighten up the summer flower bed.