Template:PokemonOldGrassPoison

Move types which are very good on {{{1}}}: Bug¹
Move types which are good on {{{1}}}: Fire, Flying, Ice, Psychic
Move types which are bad on {{{1}}}: Electric, Fighting, Water
Move types which are very bad on {{{1}}}: Grass

All other move types are normal effectiveness on {{{1}}}.

¹ – Red/Blue/Yellow only
² – All other Pokemon games