Author of the New York Times bestselling Inkheart series, Cornelia Funke has been published in 53 languages and her books have sold over 22 million copies worldwide. Cornelia lives in Tuscany, Italy, where she regularly hosts artists from around the world. Her old olive farm provides a retreat for creatives to collaborate in surprising and amazing ways.

Tammi Hartung is an ethnobotanist and co-authored alongside Cornelia, providing integral details and knowledge about the leafy citizens of The Green Kingdom. Tammi has more than 40 years experience working with plants, and has published four other books using her botanical expertise.

"Old riddles provide a modern girl with a summer adventure....The broad range of featured plants includes many that are likely to be familiar to readers. Co-authors Hartung, who has botanical expertise, and Funke, whose original German text was translated by Anna Schmitt Funke, add magic to the mundane, collaborating to create a realistic story that nevertheless feels wonderfully fantastical. Castrillón's delicate illustrations have an old-fashioned feel and provide marvelous atmosphere as well as effectively highlighting the various plant species." - Kirkus Reviews

Publisher: DK Publishing (Dorling Kindersley)

Pub date: 2026-03-31

Length: 224 pages