Which Pokémon's move creates grass in Pokémon Pokopia?

Bulbasaur’s Leafage creates grass in Pokémon Pokopia.

Pokopia lets Ditto befriend Pokémon and learn moves from them. Those moves are used as practical tools for changing the environment, so Pokémon abilities support construction and habitat restoration rather than serving only as battle techniques.

The official game description highlights Bulbasaur’s Leafage as a way to add greenery to the surroundings. Other examples include Squirtle’s Water Gun, which can refresh thirsty plants. This move-based system links the identity of each Pokémon to a useful environmental function.

The answer is Bulbasaur, not Ivysaur or another Grass-type Pokémon. The question refers specifically to the Pokémon whose Leafage is demonstrated as creating grass, not to every Pokémon that can be associated with plant-themed moves.