From Pokémon Emerald, the Grepa Berry can be used from the Bag on a Pokémon to increase the Pokémon's friendship (+10 at friendship 0-99, +5 at friendship 100-199, +1SwSh-/+2E-USUM at friendship 200-255) and lowers its Sp. Def EVs by ten points (but not below 0). In Generation IV only, this Berry reduces the EV to 100 if it is above 110 when used.
Grepa Berries have a base Berry Powder of 100 and a difficulty of 100. With two players, this Berry will contribute 200 units of Berry Powder at 100% silkiness.
A Grepa plant will yield 1-5 Berries. A growing Grepa plant's soil dries by 8% every hour, fully drying out in 13 hours.
Generation V
Planted 0 hours
Sprouted 12 hours
Taller 24 hours
Flowering 36 hours
Berries 48 hours
A Grepa plant will yield ? Berries.
Generation VI Pokémon X and Y
Planted 0 hours
Sprouted 8 hours
Growing 16 hours
Bigger 24 hours
Budding 32 hours
Bloom 40 hours
Berries 48 hours
A Grepa plant will yield 1-20 Berries. During its growth, watering the plant adds 0.5 Berries to the final harvest, weeding it adds 1.5, and removing a pest adds 3. Grepa plants attract Combee as pests. If grown next to each other, a Grepa Berry and a Roseli Berry may mutate into a Salac Berry.
Pokémon Omega Ruby and Alpha Sapphire
Planted 0 hours
Sprouted 8 hours
Taller 16 hours
Flowering 24 hours
Berries 32 hours
A Grepa plant will yield 2-26 Berries.
Generation VII Pokémon Sun, Moon, Ultra Sun, and Ultra Moon
Planted 0 hours
Sprouted 30 hours
Taller 36 hours
Flowering 44 hours
Berries 48 hours
A Grepa plant will yield 5 Berries if Isle Aplenny is at Phase 1, 9 Berries if it is at Phase 2, and 14 Berries if it is at Phase 3.
Generation VIII Pokémon Brilliant Diamond and Shining Pearl
The Grepa Berry is available in Pokémon Sleep as one of the Berries that can be gathered by helper Pokémon and fed to Snorlax.
Effect
Grepa Berries raise Snorlax's Strength, doubling the effect if the Berry is Snorlax's favorite. The base amount of Strength raised by the Berry is determined by the level of the helper Pokémon that gathered it.
One bite of this very tender Berry fills the mouth with its sweet and tangy flavor.
Acquisition
Grepa Berries can be gathered by Electric-type helper Pokémon in the player's team. Like all Berries in the game, gathered Grepa Berries do not go into the player's inventory and instead are immediately eaten by Snorlax.