Pokedex Entries
Some of the following information is based off of Leafeon's "official" profile and other books from Pokemon, while the rest I have gathered from playing Pokemon. Some information may be based off of the manga version as well if stated other wise.
DIAMOND/PEARL: Just like a plant, it uses photosynthesis. As a result, it is always enveloped in clean air.
PLANTINUM: It basically does not fight. With cells similar to those of plants, it can perform photosynthesis.
HEARTGOLD/SOULSILVER: When you see Leafeon asleep in a patch of sunshine, you'll know it is using photosynthesis to produce clean air.
BLACK/WHITE: It basically does not fight. With cells similar to those of plants, it can perform photosynthesis.
BLACK2/WHITE2: With cells similar to those of plants, it performs photosynthesis inside its body and creates pure air.
X VERSION: When you see Leafeon asleep in a patch of sunshine, you'll know it is using photosynthesis to produce clean air.
Y VERSION: Just like a plant, it uses photosynthesis. As a result, it is always enveloped in clean air.
Leafeon is the evolved form of Eevee. Eevee evolves into Leafeon at any given level, when leveled up in Eterna Forest, Pinwheel Forest or Route 20 near the moss covered rock. You can't find any wild Leafeon's in the games, so you will need to evolve Eevee in order to have a Leafeon. Check out my Eevee section to see where you can find Eevee's in different games in order to trade it or get it to evolve.
You have a 87.5/12.5 % chance of getting a boy or a girl of Leafeon, so you'll have to try many times to get a girl Leafeon! If you start from an egg, it takes about 9180-9434 steps to hatch.