How do you beat the fourth gym leader Pokemon LeafGreen?

Answer 1

The fourth gym leader in Leaf Green should be Erica, the grass-type user. Her first Pokemon should be a level 29 Victreebel, so use either a Fire type, like Growlithe/Arcanine, or a Flying type, such as a Fearow or Pigeotto/Pigeot. Her next Pokemon is a level 24 Tangela. Once again, Flying or Fire should do the trick. Her third and final Pokemon is a level 29 Vileplume. Take this one out ASAP, as it knows Stun Spore and other nasty attacks. I would suggest a Psychic Pokemon here, such as Kadabra/Alakazam. Good luck!