You will need LeafGreenGBA, put that game and Platinum into your DS go to the route south-west of solaceon in the grass you can find Vulpix rarely.
-Empol
Chat with our AI personalities
vulpix is not in Pokemon platinum version.
I'm not sure if you can catch Vulpix in Platinum but I do know that you can migrate it from either Pokemon Sapphire or Emerald, and some sources say you can even get Vulpix from Pokemon Leafgreen. I hope this helped.
no Pokemon evolves with a fire stone in Pokemon platinum except eevee which turns in to flareon
the trainer by that place, you know ? :)
After you get the national pokedex, insert a Pokemon leafgreen cartridge into the nds, and you can find vulpix in route 209