Grass

Grass Type
The Grass type is one of the eighteen Pokémon elemental types.

It is super effective against Ground, Rock and Water.

It is not very effective against Bug, Fire, Flying, Ice and Poison.

It is weak to

Gen I (Kanto)
 category = Pokémon category = Grass 

Gen II (Jhoto)

 * Chikorita
 * Bayleaf
 * Meganium
 * Hoppip
 * Skiploom
 * Jumpluff
 * Bellosom
 * Sunkern
 * Sunflora