Overgrow — Pokémon Ability

Strengthens Grass moves to inflict 1.5× damage at 1/3 max HP or less.

Effect notes

When this Pokémon has 1/3 or less of its HP remaining, its Grass-type moves inflict 1.5× as much regular damage.

ruby sapphire	Ups GRASS moves in a pinch.
emerald	Ups GRASS moves in a pinch.
firered leafgreen	Ups GRASS moves in a pinch.
diamond pearl	Powers up Grass-type moves in a pinch.
platinum	Powers up Grass-type moves in a pinch.
heartgold soulsilver	Powers up Grass-type moves in a pinch.
black white	Powers up Grass-type moves in a pinch.
black 2 white 2	Powers up Grass-type moves in a pinch.
x y	Powers up Grass-type moves when the Pokémon is in trouble.
omega ruby alpha sapphire	Powers up Grass-type moves when the Pokémon is in trouble.
sun moon	Powers up Grass-type moves when the Pokémon’s HP is low.
ultra sun ultra moon	Powers up Grass-type moves when the Pokémon’s HP is low.
lets go pikachu lets go eevee	Powers up Grass-type moves when the Pokémon’s HP is low.
sword shield	Powers up Grass-type moves when the Pokémon’s HP is low.
scarlet violet	Powers up Grass-type moves when the Pokémon's HP is low.