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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.
This is what nature does when white oak acorns sprout after falling to the ground or when red oak acorns buried by squirrels sprout and grow the following spring. We can also grow perfectly good oaks by directly planting acorns. Not all of these acorns will sprout however, and some may be dug up by squirrels and birds.