Bulbasaur teaches Ditto Leafage to grow grass in Pokémon Pokopia.
In Pokopia, befriending Pokémon provides practical abilities that help transform the landscape. Bulbasaur’s Leafage is used to add greenery and create patches of grass, making it an important early example of how Pokémon moves function as construction tools rather than simply battle attacks.
Ditto can learn other useful moves from Pokémon it meets. Squirtle’s Water Gun refreshes thirsty plants, while additional abilities can help cut debris, smash rocks, or perform other environmental tasks. These skills let players gradually repair the wasteland and create habitats suited to different species.
Leafage should not be confused with Vine Whip or Razor Leaf, which are separate Grass-type moves associated with Pokémon in the main series. The question refers specifically to the move highlighted in Pokopia’s official gameplay description: Bulbasaur’s Leafage helps add green growth to the world.