| Pokedex Entries: |
| Red | A strange seed was planted on its back at birth. The plant sprouts and grows with this Pokémon. |
| Blue |
| Yellow | It can go for days without eating a single morsel. In the bulb on its back, it stores energy. |
| Gold | The seed on its back is filled with nutrients. The seed grows steadily larger as its body grows. |
| Silver | It carries a seed on its back right from birth. As it grows older, the seed also grows larger. |
| Crystal | While it is young, it uses the nutrients that are stored in the seeds on its back in order to grow. |
| Ruby | BULBASAUR can be seen napping in bright sunlight. There is a seed on its back. By soaking up the sun's rays, the seed grows progressively larger. |
| Sapphire |
| Emerald | BULBASAUR can be seen napping in bright sunlight. There is a seed on its back. By soaking up the sun's rays, the seed grows progressively larger. |
| FireRed | There is a plant seed on its back right from the day this POKéMON is born. The seed slowly grows larger. |
| LeafGreen | A strange seed was planted on its back at birth. The plant sprouts and grows with this Pokémon. |
| Diamond | For some time after its birth, it grows by gaining nourishment from the seed on its back. |
| Pearl |
| Platinum | For some time after its birth, it grows by gaining nourishment from the seed on its back. |
| Stadium 1 | The bulb-like pouch on its back grows larger as it ages. The pouch is filled with numerous seeds. |
| Stadium 2 | The seed on its back is filled with nutrients. The seed grows steadily larger as its body grows. |
