Erika's Team:
- Tangela (Grass)
- Weepinbell (Grass/Poison)
- Vileplume (Grass/Poison)
Strategy:
Erika specializes in Grass/Poison-type Pokémon. They are weak to Fire, Flying, Ice, and Psychic-type moves. Your Partner Pikachu's 'Floppy Swirl' (Flying) or a Fire-type like Growlithe/Vulpix (found on Route 7/8) will be very effective. A Psychic-type like Kadabra or a Flying-type like Pidgeot can also do well. Be wary of their status-inflicting moves like Sleep Powder and Stun Spore.
