What moves victreebel learn in Pokemon LeafGreen?

Answer 1

It is possible that once you evolve your Weepinbell into Victreebel it can not learn any moves. It is suggested not to use the stones to get these Pokemon (like Clefable, Wigglytuff, Raichu, Vileplume) until they have learned satisfactory moves in their pre-evolved states. There is an early move guide here: http://www.dltk-kids.com/Pokemon/adoptions/victreebel-p.htm

However there is one more detailed for newer games here: http://www.serebii.net/pokedex-rs/071.shtml

None of them clearly say what moves and when they can be acquired. Perhaps once the evolution happens none can be learned. However you can teach them TM and HM moves. Such as CUT, TOXIC, HYPERBEAM, GIGADRAIN, SOLARBEAM, THIEF, FLASH and several others.