To get Leafon you have to evolve an Eevee by leveling up near the moss rock in Eterna Forest (the rock isn't far from the Florama entrance)
Pokemon Number 169 in Platinum is Leafeon
No.
Gardenia has one.
It is Leafeon.
two trainers on the way to Pokemon mansion from pastoria have them.
Get an Eevee and level it up in the Eterna Forest.
to get a leafeon in Pokemon platinum, you need to have an eevee and then at any lvl you have to use a leaf stone!
In a battle at the top of Route 212
At the top of route 212 the ranger has 1
Personally, I like Togekiss, Snorlax, Blissey, Leafeon and others
You have to get it from a friend who has Pearl/Diamond/Platinum
By trading across from either Pearl, Diamond or Platinum version