You can only get those starters by either cheating, or by migrating from FireRed, or LeafGreen.
You can find bulbasaur in the joyous tower.
Lucas has a Monferno.
At the start,go to oak's lab,then he will tell you to chose a Pokemon the first Pokemon will be bulbasaur.
goto spearpiller
You can't find Bulbasaur in the wild on Pokemon Diamond or Pearl (not sure about Platinum).
You cannot find bulbasaur on Pokemon pearl, diamond and platinum but you can transfer from GBA via pal park.
You cannot find Bulbasaur in Pokemon Platinum. you can only get a Bulbasaur through trading from Pokemon Leaf Green or Fire Red. You can even use an AR to get Bulbasaur in Pokemon Platinum. Sorry I don't remember the code. Have fun and good luck.
Choose it as a starter Pokemon. You can't find wild starters in any game. As an alternative, you can get a Bulbasaur in one game and trade it to your other game.
yes but its very hard to find
You cant find one you have to migrate or trade.
you cant find it you have to get someone else to trade
You must trade it from Pokemon firered or Pokemon leafgreen