The story
From earth + berry. First attested in the 1800s, mostly in texts about or translated from German or other languages which use similar terms, of which it is likely a calque: German Erdbeere, Dutch aardbei, Danish jordbær, etc. Compare Old English eorþberġe (“strawberry”, literally “earthberry”). Also compare Polish poziomka, Russian земляни́ка (zemljaníka) (related to земля́ (zemljá)).
Etymology from Wiktionary, CC BY-SA 4.0.