An Etymological Dictionary of the German Language/Annotated/Pflanze
Pflanze, feminine, ‘plant, vegetable,’ from Middle High German pflanze, pflanza, feminine; from the equivalent Latin and Romance planta (French plante, Italian pianta), whence Anglo-Saxon, English, and Dutch plant (so too Irish cland, Welsh plant). This term was borrowed at the same period as the words mentioned under Pfirsich.