The original Plants vs. Zombies contains 49 different plant types.
That total refers to the unique plants available in the finished game, including ordinary plants earned through Adventure Mode, upgrade plants, and Imitater. Each plant has its own cost, recharge time, placement rules, and tactical role. The roster is organized around the game’s environments and systems rather than simply being a list of attackers: there are daytime plants, mushrooms for night levels, aquatic plants for the Pool, fog-countering plants, Roof plants, and upgrades.
The number is sometimes reported incorrectly as 48 because most plants are introduced through normal progression while Imitater is obtained separately. It can also be confused with 26, the number of zombie types in the original game. Those are separate rosters, and counting only plants earned directly at the end of standard levels produces a different figure.
The variety is part of the game’s strategic appeal. Players choose only a limited selection of seed packets before each level, so having 49 available plants does not mean every plant can be used at once. The final roster also includes upgrade combinations such as Gatling Pea and Cob Cannon, which expand existing plants into more specialized defenses.