GrassPsychic
Grass/Psychic weaknesses
Grass/Psychic is weak to Bug, Fire, Ice, Poison, Flying, Ghost and Dark, and takes 4× from Bug.
When Grass/Psychic Pokémon are hit
4×Hits hardest
2×Super effective
½×Not very effective
Its two types separately
Multiply the two to get the result. For example, Bug deals 2× × 2× = 4×.