How do you use a leaf stone in Pokemon indigo?

There's no "Leaf Stone" in Pokémon Indigo Version, which is the Japanese name for Pokémon Yellow Version. The concept of evolution stones like Leaf Stones was introduced later in the Pokémon games, specifically in Pokémon Gold and Silver.

How evolution stones work in later games:

* Evolution Stones: Certain Pokémon can evolve by using specific evolution stones. For example, a Gloom can evolve into a Vileplume using a Leaf Stone.

* Finding Evolution Stones: Stones are typically found in various locations within the game, such as hidden in caves, behind rocks, or by trading with other players.

To evolve Pokémon in Pokémon Yellow, you mainly rely on:

* Leveling up: Many Pokémon evolve by reaching a certain level.

* Trading: Some Pokémon evolve through trading.

If you're looking for a specific evolution method, please tell me the Pokémon you want to evolve, and I can guide you on how to do it in Pokémon Yellow.