In Pokémon HeartGold and SoulSilver, Professor Oak will give you the National Dex at the port in Olivine City if you have defeated the Champion of the Pokemon League. You also need to go to Prof. Elm and defeat the Kimono Girl's, all of which have evolutions of Evee.
You can not.
on the pokewalker
It is uncommon to find one in HeartGold, it can be found in the National Park during the Bug-Catching Contest.
To get vaporion give evee a water stone.to get flerion give evee a fire stone. to get joltion give evee a thunther stone and that is all for Pokemon leaf fire and and water
EVEE evolves at level 15
You can evolve an evee which you can find in Goldenrod city.
you get it from bill in goldenrod city
No, you would have to transfer an Evee from one of your other games I.E. Heartgold soulsilver etc.
You can't catch an evee in heart gold, but you get one from bill in Joto at goldenrod city just Southwest of the gaming Cornner.
hatch from egg breed in day care evee and ditto
You can't get a wild Eevee. You can, however, receive one from Bill.
The Icy Rock is not in it, which is needed to evolve an Eevee into a Glaceon.
No because there is no clock in leafgreen you must trade evee to a game with an internal clock to make it evolve to evee those games are ruby, sapphire and emerald also heartgold, soulsilver, diamond, pearl and platinum.
You can't capture one, but if you visit Bill in Goldenrod City, he will give you one for free
Go to a rock with moss on it and walk around it and make it grow up a level.
Defeat the Pokemon league and go to bills house. make one space in your party and he will give you Eevee