#597 Ferroseed

This was, in my opinion, the evolution line that was the strangest in Unova and yet this evolves into a genuinely useful pokemon in competitive play. Despite being Grass/Steel which is 4x weak to Fire. So what exactly is this thing? A mace or a spiky durian? Looks like it's both. Don't durians smell horrible though? Since when could metal smell like anything?
This is number 3 of the Random Pokemon Generator mons.