First you must have beaten all the gym leaders. Then fly to Hearthome City. Go through all the houses until you find Bebe. Talk to her and she will give you an evee egg.
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?
evee
you can use a ditto the egg takes a while to hach but u get and evee
It evolves evee into flareon.
the Pokemon are pikachu and evee to jolteon and that is all
Get an egg from someone in one of the cities
well when you get the egg from her.itll be a surprize you have got an evee egg.one easy way to evolve evee is to level it up at morning or night.another way is to give it the thunder ,flame, or aqua stone.the last way is only in diamond pearl and platinum.you level it up near the mossy rock in the eterna foret.and go to the icy rock in route 217.hope you get the evee you wanted.
fire stone evee
After evolving your evee breed it with a ditto hatch the egg to receive another evee.
To make any egg go to the Pokemon daycare and put in a ditto and the evee. There a more complex way to do it though....
In the Hearthome City Bebe will give you an egg and the egg will hatch into an evee!
To my knowledge (not there yet) I assume eevee is male and evee needs to female to mate with ditto (as all pokemon)