You get a leaf stone underground.
No, you cannot evolve Eevee with a leaf stone. It can evolve into the leaf type Pokemon, Leafeon, but it evolves by leveling it up in Eterna Forest in Pokemon Platinum
You can evolve Gloom by a sun stone, or a Leaf stone. Sun stone= Belossom Leaf stone= Vileplume
Nuzleaf will evolve into Shiftry and the leaf stone will turn Gloom into Vileplume.
Leaf Stone: Exeggcute, Gloom, Weepinbel Water Stone: Staryu, Eevee, Poliwhirl Fire Stone: Vulpix, Growlithe, Eevee Moon Stone: Clefairy, Jigglypuff, Nidorina, Nidorino I'm about 90 % sure that this is all of them.
go to the top of the beacon remember a leaf stone only works on some Pokemon
In Pokemon Blue, Bellsprout evolves into Weepinbell at level 21 and Victreebell when exposed to a Leaf Stone
You get a leaf stone underground.
The only Unova Pokemon that evolves with a Leaf Stone is Pansage.
Pokemon
Pansage will evolve by using a Leaf Stone into Simisage.
Gloom and Weepinbell.I think there are some more Pokemon that evole with a leaf stone but I forgot....
Trade a green shard to the hunter to get a leaf stone.
Pokemon can evolve at a huge variety of levels; from 7 to 50. Some Pokemon don't need to level up to evolve. They can evolve by stones; such as: Fire Stone, Leaf Stone, Water Stone, Thunder Stone, and Moon Stone. You can evolve them by trading them with a friend, which these are the Pokemon can be traded to evolve: Graveler, Gengar, Machoke, and Kadabra. (These Pokemon are available in Blue and Red. The further Pokemon do not exist.)
you have to have sex to get a leaf stone you have act sexy baby...
pansage = leaf lampent = dusk
a grass Pokemon