On Route 123
next to the berry masters house
the berry masters house is on route 123
Randomly you can receive some from the berry masters wife there house is in the route east from mauville city.
Surf east from Mauville and go east through the grass. You will reach an area with a house in it, that is the berry master's house, and his wife is inside it.
BELUE BERRY= super hustleDURIN BERRY= cool latiosPAMTRE BERRY= challenge contestSPELON BERRY= great battleWATMEL BERRY= overwhelming latios
Only firered, leafgreen, ruby, sapphire and emerald can get a pamtre berry for firered and leafgreen you can get it from a Pokemon with the ability pickup, in ruby, sapphire and emerald talk to the berry masters wife and tell her "challenge contest" she will be impressed and give you a pamtre berry.
berry masters house
next to heartrome city.
first,go to hearthrome city then go down, then go left you will see a gate (or whatever it is) go thro it go up and that will be the berry masters house
6
You have to talk to the berry masters wife and she'll ask for a good saying then say challenge contest but i think you need to do the elite four to get contest in your vocabular
there is no such thing as a friendly berry in Pokemon sapphire