As a matter of fact, you can get an Evee!
1.) Once you have the national dex, go to the Woman who made the PC's home. Make sure you have one space in your party for a Pokemon, then say yes to her question. To find the woman,(Her name is Bebe) go to the house next to the Pokemon center in Hearthome City.
2.) Once you have the national dex, go to the Pokemon Mansion. He'll be talking about how he swore he saw a rare Pokemon in his garden. One of them are an Evee.
So there you are!
evee
if you put it in 1st place
It evolves evee into flareon.
the Pokemon are pikachu and evee to jolteon and that is all
fire stone evee
Ash has 6 Pokemon in Diamond version
mostly: evee------flareon vulpix-----ninetails growlith---arcanine
I dont have pokemon diamond
Eevee can only be obtain through the Dream World, trading with BW2 or transfering from Diamond/Pearl/Platinium/Heart Gold/Soul Silver.
give it the water stone.
i dont think u can get it from trophy garden but from my intelligence there is a girl somewhere in the game that gives an evee or its egg y do you want an evee anyway?
go to hearthome city next to the Pokemon center is a house go there and you'll see a house in there will be bebe she'll give a evee level 20