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What Type of Tree Makes an Acorn? Only trees in the Quercus genus produce acorns. Watch a squirrel or chipmunk forage for food and no doubt a cache of acorns will appear. Acorns provide food for various wildlife, or they would otherwise litter the forest floor and rot since they are too heavy to disperse via wind.
Acorns that germinate underneath the parent tree seldom grow to any size in the shade of the parent tree. Acorns are heavy and cannot be wind dispersed as is common with most other tree seed. An oak requires a mechanism to disperse the seed away from the parent tree.