A Charti Berry is a berry introduced in Generation IV. When planted, they take 48 hours (2 days) to grow. When fully grown, a Charti tree will have 3-20 berries.
It halves the damage of super-effective Rock-type moves from Rock-type Pokémon.
In Pokémon X and Y, the player obtains the berry by talking to a boy in a house in Cyllage City or by defeating Inver in the house on Route 18.