Ferrothorn (Japanese: ナットレイ Nutrey) is a dual-type Grass/Steel Pokémon. It evolves from Ferroseed starting at level 40.
Ferrothorn is a Pokémon resembling a flattened durian made of metal. Its body is covered in metal thorns, with three black stripes circling its width, the lower stripe having triangular decorations below the eyes of Ferrothorn. Its eyes have green rims, yellow scleras, and dark pupils. There is a green spike at the top of its body, and extending around it are vine-like, long green appendages tipped with spiky metal disks.