Definitely mind your head when walking by one of these! Ever wondered how big a pine cone can grow? Well, ponder no further. The Coulter pine (Pinus coulteri), an evergreen conifer native to the coastal mountains of southern California and northern Baja California, is known for producing the heaviest and largest cones of any pine species, which can weigh up to 5 kg … [Read more...] about The Widowmaker Pine Cone Is the World’s Largest: It’s So Big It Can Actually Kill You