Definition of apple mint in English:

apple mint

noun

  • Either of two similar apple-scented mints grown as herbs, Mentha suaveolens, originally of southern Europe (and south-west Britain) and now widely naturalized, and M.× villosa, a hybrid of M. suaveolens and spearmint (M. spicata); especially a broad-leaved cultivar of this hybrid, M.× villosavar. alopecuroides.

Origin

Late 19th century; earliest use found in The Times.