First Day of Groot!

The second book in the hit Rocket and Groot picture book series!


Check out the rest of the books in the series: Night Night, Groot and Snow Day for Groot!


You’ll find adventure at every turn. Now, come on, quick—it’s time to learn!


Just like the rest of us, Groot’s learning that there’s a first time (and a first day!) for everything. Follow Rocket and Groot as they set off across the galaxy learning new lessons, developing new skills, and making new memories with friends along the way.



With so many new experiences on the horizon, Groot’s sure to have a first day rooted in spectacular fun, heroics, and everything in between. Don’t be late for this thrilling adventure with the mightiest heroes from Earth and beyond!


Told in rhyme and accompanied by colorful and action-packed illustrations, First Day of Groot! is the perfect story to help little learners get excited about first-time experiences.

Brendan Deneen is the award-winning author of Night Night, Groot, as well as the all-ages graphic novels Flash Gordon: The Mercy Wars and The Island of Misfit Toys. He is the father of two young daughters, who also love to explore the cosmos with their dad (or sometimes just the backyard)!

Cale Atkinson is an author and illustrator whose titles include Explorers of the Wild, To the Sea, Off & Away, Sir Simon: Super Scarer, and more. When he's not helping the Avengers defend the Earth or adventuring with Rocket and Groot, he can be found with his family in Kelowna, British Columbia.