Grass-Steel Type
Defense (damage taken)
0×
1⁄4×
1⁄2×
1×
2×
4×
poison
grass
normal
rock
steel
water
electric
psychic
dragon
fairy
ground
bug
ghost
ice
dark
fighting
fire
Offense
Grass
2×
1×
1⁄2×
0×
ground
rock
water
normal
fighting
ghost
electric
psychic
ice
dark
fairy
poison
bug
steel
fire
grass
dragon
Steel
2×
1×
1⁄2×
0×
rock
ice
fairy
normal
fighting
poison
ground
bug
ghost
grass
psychic
dragon
dark
steel
fire
water
electric