Well their aren't a lot grass type they only have cherubi bedew totters
it depends what team of Pokemon you have
Pikachu's team
you should use water type Pokemon
whats your team
Well that is up to you :P
Turtwig is a good starter to go with.Why? Because when it evolves in stage 2, Ground and Grass, It is really strong to infernape, and the other Fire types.And it is strong against grass. I would have Shinx,Starly,Bidoff. They are the only one to catch when you start your adventure.
No, instead there is a Team Galactic.
There is no such thing as a perfect team
The best team in pokemon platinum is an Infernape, Staraptor, Luxray [third evolution of Shinx], Floatzel, Bibarel [make it learn all four moves as HMs] and Giratina.
No.
Cynthia will give it to you when you meet her in front of the Team Galactic Building in Eterna City. Have a Normal or Grass type use it on the nearby shrubs to get into the building.
there is no team plasma in pokemon platinum I think it was team galactic