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.
You have to go to the berry masters wife. She asks you if you've heard any sayings lately, and if you want a Pamtre Berry, you answer, CHALLENGE CONTEST. And that's it ;]
the berry that i use on my feebas was pamtre berry and it turn out well my feebas evolve you can get the pamtre berry on pal park
PAMTRE BERRIES YO!
Pamtre Berries can be found occassionally when you walk around with a Pokemon in Amity Square. They are somewhat rare, so it may take some time before you get one. After you get one Pamtre Berry, you can plant it and grow more Pamtre Berries so that you don't have to go find another one in Amity Square. A great way to evolve feebas is to use 11 high level wiki poffins then use a high level pamtre poffin and it should max out your beauty i have 3 regular milotics and a shiny i got from a freind. Have Fun getting that Milotic! you can also go to the berry masters house everyday until you get one. i would use a apicot berry or a wiki berry, if i were you. use growth mulch to speed up growth time. :3 (this little section was by ~Poke'fan Lunarstar911)
corrn berry, magost berry, nomel berry, rabuta berry, belue berry, durin berry, pamtre berry, spelon berry, and watmel berry but they are very rare
You must obtain the berry first. And plant them as normal as any other berry.
i would suggest using a pamtre berry and making poffins with it.
You get it after Elite 4
I would recommend belue and pamtre berries.
say BELUE BERRY = SUPER HUSTLE DURIN BERRY = COOL LATIOS SPELON BERRY = GREAT BATTLE WATMEL BERRY = OVERWHELMING LATIAS PAMTRE BERRY = CHALLENGE CONTEST
cornn, pamtre, and kelpsy find them from berry master and grow em alot