Acorn with a Large Cap
A single oak acorn with a textured protective cap and smooth nut shell showcases the fundamental seed of the oak tree.
A4 format (portrait), black outlines on a white background · for home and classroom use
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The Structure of an Oak Tree Acorn
A mature acorn consists of a smooth nut seated securely inside a bumpy, cup-like cap with a short stem attached at the top. Serving as the primary seed of the oak tree, this compact natural package contains the nutrients necessary to sprout a new seedling in spring.
How Acorns Help Plant New Forests
Tree squirrels and blue jays bury thousands of acorns every autumn to store food for the winter season. Because these animals forget the exact location of up to twenty percent of their buried caches, forgotten acorns sprout in spring, effectively planting future oak forests across vast distances.
Natural Colors of Real Acorns
- Smooth nut shell: glossy tan, chestnut brown, or olive green
- Textured acorn cap: grayish brown or dark slate gray
- Attached top stem: woody brown or muted khaki
- Unripe summer acorn: bright apple green