About the Holiday

Arbor Day, a national celebration of trees, began as a campaign by J. Morton Sterling and his wife after they moved from Michigan to Nebraska in 1854 and advocated for planting trees as windbreaks for crops, to keep soil from washing away, as building materials, and for shade. In 1872, Morton proposed that a tree-planting day be established in April. On the first Arbor Day nearly one million trees were planted in Nebraska. The idea was made official in 1874, and soon, other states joined in. In 1882 schools began taking part. Today, most states celebrate Arbor Day on the last Friday of April or day more suited for their growing season. To learn about events in your area, find activities to download, and more, visit the Arbor Day Foundation website.

Just One Oak: What a Single Tree Can Be

Written by Maria Gianferrari | Illustrated by Diana Sudyka

“Just one oak . . . from the tip of its crown down to the ground, with roots all around, sustains so very many creatures, from the teeny-tiny to the big and mighty.” So begins Maria Gianferrari’s fascinating exploration of all the ways oak trees contribute to and sustain the ecosystem where they live. From their distinctive leaves to their shaggy bark to their incredible acorns, oak trees are self-protecting while providing shelter and food for an amazing array of wildlife.

At ground level, Gianferrari shows how “leaf litter, the blanket beneath its boughs,” creates the perfect environment for snails, insects, amphibians, fungi, and more to hide, feed, and grow. And that little acorn nestled under the leaves? Gianferrari digs in to reveal how a mighty oak begins with just one taproot that branches and branches until its root system spreads “farther than the canopy is wide.”

And oh those acorns! They’re so much more than their tiny size may lead you to believe. Just one acorn can house one creature or hundreds. They are a universal “superfood” as well as a tidy seed that can reproduce where it drops or be carried far afield. When it grows up, “just one oak creates a microclimate,” with its impressive canopy and prevents flooding, erosion, and drought with its far-reaching roots. Yes, “just one oak is beautiful and bountiful to all.”

Maria Gianferrari takes readers outdoors to get a close-up view of one oak tree, and by extension an enlightened understanding of the reach of this keystone species. Her lyrical introductions, capped with a repeated “Just one oak . . .”—a phrase that reinforces the contributions of these trees, give way to paragraphs of factual information. Each of these paragraphs are packed with specific information about the types of creatures sustained by just one tree and the benefits they enjoy. The numbers here are simply astounding and could inspire many cross-curricular lessons in math, science, language arts, art, and more.

Diana Sudyka’s nature illustrations are beautiful, exciting, and full of the kinds of small, impactful details readers love and that expand their understanding of the text (especially for visual learners). Animals scamper, birds feast, and an entire community of creepy-crawlies scurry through leaf litter and below in Sudyka’s action-filled pages. Each spread will have children lingering to discover all the wonders of an oak tree.

A glorious celebration of the oak tree and the species that rely on it, Just One Oak will spark curiosity and an appreciation for the interconnections among wildlife. The book will delight any nature lover and is a must for school and public libraries.

Ages 4 – 8+

Beach Lane Books, 2026 | ISBN 978-1665961042

About the Author

Maria Gianferrari is a picture book reader/writer, tea-drinker, dog-lover, and birdwatcher. Maria writes books that honor our bonds with creatures both domestic and wild and that celebrate the natural world around us, including Fungi Grow and Just One Oak, illustrated by Diana Sudyka; Ice Cycle: Poems about the Life of Ice, illustrated by Jieting Chen; Being a Dog: A Tail of Mindfulness, illustrated by Pete Oswald; Bobcat Prowling, illustrated by Bagram Ibatouilline; and Be a Tree!, illustrated by Felicita Sala. She lives with her family in Massachusetts in a house encircled by trees. To learn more about Maria, visit her website: MariaGianferrari.com.

About the Illustrator

Diana Sudyka is a Chicago-based illustrator. Early on, she created screen-printed gig posters for musicians but currently her illustration work focuses on young adult, middle grade, and children’s books. She has illustrated several volumes of the award-winning book series, including The Mysterious Benedict Society by Trenton Lee Stewart and Circus Mirandus by Cassie Beasley, as well as the picture books Would You Come Too? by Liz Garton Scanlon, Sometimes Rain by Meg Fleming, What Miss Mitchell Saw by Hayley Barrett, How to Find a Bird by Jennifer Ward, and Fungi Grow and Just One Oak by Maria Gianferrari. Visit her at DianaSudyka.com.

Arbor Day Activities

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Paper Plate Tree

On Earth Day children love planting trees in their yard or as part of a community project. With this easy craft, they can also plant a tree on their wall or bulletin board.

Supplies

Two paper plates
Paper towel tube
Brown craft paint
Green craft paint (using a variety of green paints adds interest)
Paintbrush, cork, or cut carrot can be used to apply paint
Glue or hot glue gun or stapler

Directions

Paint the paper towel tube brown, let dry
Paint the bottoms of the two paper plates with the green (or other color) paints, let dry
Flatten about 4 inches of the paper towel tube
Glue or tape the flat part of the paper towel tube to the unpainted side of one paper plate
Glue the edges of the two paper plates together, let dry.
Straighten the tree so that it can stand up, or hang your tree on a wall, bulletin board, in a window

Just One Oak Activity Kit from Beach Lane Books

Teachers and other educators can find a comprehensive Activity Kit with discussion questions, hands-on activities, and more to accompany Just One Oak on Maria Gianferrari’s website.