sorry but you can't. but if you trade it into diamond pearl or platinum and train it in enternia forest next to the mossy rock and it will eventually evolve
To evolve your Evee into Leafeon, get a leaf stone, and use it on Evee, and it will evolve into Leafeon! Have fun with Leafeon! -Garrett
No. In order to get a glaceon or leafeon in soul silver you have to trade your evee to diamond, pearl, or platinum and evolve them in their appropriate locations
You level up evee in eterna forest
You can't leafeon doesn't exist in leafgreen.
you can evolve evee to leafeon by taking leafeon to a stone in the forest by the second gym leader.
Level it up at Eterna Forest.
no have to trade from dppt
Get an Eevee and go to Eterna forest and level it up. You should have a Leafeon.
You have to use a leaf stone on your eevee. Sorry, I don't know where to find a leaf stone though. : ) hope this helped!
Glaceon: To get Glaceon you got to have an evee first then go to a route where in snows most likely stand next to a tree that has snow on it give the evee a rare candy and it should evolve to a Glaceon. Leafeon: To get Leafeon you got to have an evee first then go to a forest EX: Eterna forest then stand to a normal tree give the the evee a rare candy and it should evolve to a Leafeon. NO CHEATS!!!!!!!!!!!!!!!!!!!!:)
EVEE evolves at level 15
In the woods before Eterna, there is a Mossy Rock, you must have an Evee with you and a rare candy, stand next to it and level up the Evee and it will evolve to Leafeon.