I'm pretty sure you need to find a Leaf Stone.
Yes u can
you cant get glaceon or lefeon in soulsilver
Eevee can't evolve into leafeon in soulsilver you have to trade it to diamond and pearl and evolve it there. The ilex forest doesn't have a Mossy Rock - which is what evolves eevee into leafeon.
Eevee ----ANSWER 2: it wont work, for Leafeon, u need to have a person with diamond, trade an eevee over there, have them go to the forest after "flower town" and have eevee go up a level, it should evolve into Leafeon after that
You need to trade with pearl and diamond for leafeon and glaceon. The 5 other forms are all attainable within soulsilver.
To get a leafeon you need to get the eevee from bill in goldenrod city and level it in a grassy area
you get leafeon by using a leaf stone on eevee
You can't leafeon doesn't exist in leafgreen.
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!
It cant
Get an Eevee and level it up in the Eterna Forest.
You can't,but you could send it over to a Diamond or Pearl game and level it up in Eterna forest. :D I hope this helped!