From Bulbapedia, the community-driven Pokémon encyclopedia.
The Banana Slakoth Garden (Japanese: バナナナマケロ園 Banana Namakero Garden) is an anime-only location in Hoenn located between Fortree City and Lilycove City. The garden is a reserve for Slakoth to eat bananas.
The garden appeared in The Garden of Eatin', where it was in danger of being eaten out by a Snorlax. In addition to eating all of the food, the wild Snorlax uses Yawn to make other Pokémon fall asleep. The garden's owner, Marcel, used his newly evolved Vigoroth to oppose Snorlax; Vigoroth's Vital Spirit rendered Yawn without any no effect. Marcel later caught Snorlax and created an attraction featuring Snorlax's Yawn attack. Since there was now a Vigoroth in the garden, Marcel decided to rename it the "Banana Slakoth and Vigoroth Garden".
Pokémon seen in the Banana Slakoth Garden