Earth is an element in Final Fantasy Tactics. Panthers and Aevises are weak to it, and Automatons and units with Float status are immune to it, and Treants are healed by it. There are no Earth-elemental weapons, and so the player can only hit enemies with the few spells and abilities that embody this element.
DigiCube Guide Book (DigiCube) - Character Card Books (DigiCube) - Daizen (Famitsu) - Kōshiki Kōryakuhon (V Jump) - The Official Strategy Guide (Prima)
WotL books
Official Complete Guide (Square Enix) - Perfect Guide (Famitsu) - Tactics for Beginners (V Jump) - Official Strategy Guide (BradyGames)