You can get a Jolteon with a Thunder Stone, a Flareon with a Fire Stone, a Vaporeon with a Water Stone, an Umbreon by getting it to max happinesss during the night, and you can Espeon by getting it to max happiness during the day.
You cannot evolve Eevee into Glaceon or Leafeon in HeartGold or SoulSilver.
Eevee evolves into Glaceon when you level it up at the Icy Rock at Rt 217 or at the Icy Rock in Twist Mountain.
Eevee evolves into Leafeon when you level it up at the Moss Rock at Eterna Forest or Pinwheel Forest.
As Rt 217, Twist Mountain, Eterna Forest and Pinwheel Forest are only available in Diamond, Pearl, Platinum, Black and White, you cannot evolve Eevee into Leafeon or Glaceon in HeartGold or SoulSilver.
Chat with our AI personalities
If you breed an Eevee with a Ditto, then you can evolute the hatchlings into the other forms
You will get an eevee egg. That you can evolve into an eevee or the other eevee evolutions.
Isshu doesn't have any new Eevee evolutions but Eevee is capable of evolving into any of the previous evolutions which includes Glaceon and Leafeon.
get an eevee and evolve it into a thunderstone
With a other Eevee, one of its evolutions, or a ditto.