What Ferns Are Poisonous To Humans?

What Ferns Are Poisonous To Humans? What ferns are poisonous to humans? Bracken fern is widely dispersed throughout North America with most poisoning occurring in the North Western States. Horses, cattle, sheep, pigs, and humans. Are there any toxic ferns? Bracken fern is a delicacy consumed by humans and serves as animal forage around the