Gloom -> Vileplume
Weepinbell -> Victreebell
Exegcute -> Exeggutor
Chat with our AI personalities
It will only evolve through the use of a leaf stone.
Use a thunder stone
A leaf stone it will become vileplume.
Take a leaf stone and use it on him.
You have to use a leaf stone on your eevee. Sorry, I don't know where to find a leaf stone though. : ) hope this helped!