From Bulbapedia, the community-driven Pokémon encyclopedia.
This is a list of the growth times (in hours) of all Berries from Generation III onward. In Generation II, Berries cannot be planted so do not have growth times; instead, Berry plants simply regrow their Berries at midnight.
In Generation IV, mulch can be used to modify the growth time of Berry plants. Growth Mulch makes plants grow in 75% of the regular time, while Damp Mulch makes plants grow in 150% of the regular time.
List of Berries by growth time