Hardcover, paper over boards. All-star team: Author Kallie George is a prolific and award-winning children's book author, and illustrator Sara Gillingham is an award-winning children's book illustrator, author, and designer. Unique angle for a kids mushroom book: Mushrooms Know stands out among other books about fungi for kids because it focuses on the special wisdom mushrooms have, and what we can learn from them. Fun & digestible fungi science: Mushrooms Know shares the science of fungi in an accessible way for kids. Scientific authority: The science featured in the book has been reviewed by a mycologist. Nonfiction picture book: Greystone Kids nonfiction picture books--including Julia Kuo's Luminous and Denyse Waissbluth's Teatime Around the World --are award-winning and critically acclaimed, and Mushrooms Know is an excellent new addition to the collection. Companion to Sara Gillingham's Wildflower : Mushrooms Know has a similar illustration style to the much-loved previous book illustrated by Sara Gillingham. Lexile: AD680L Fountas and Pinnell Guided Reading Level: O.