where I can get berries in Fire Red? it's only in Ruby,Sapphire and Emerald?
There is no berry trees in FireRed. However, you can obtain berries by various methods. Those are:
Those are the only known methods.
I know i'm late but all you have to do is get 30 Pokemon in your pokedex and get the itemfinder from one of professor's aides then go to berry forest and use it around the hidden berries probably need to search for the location. To get the same berry you have to take 512 steps since it doesn't track in time....