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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.
Not all acorns are created equal. Just as acorns are the preferred deer food in autumn, white oak are the preferred acorns. Deer judge acorn taste, and subsequent preference by the level of tannic acid in the nut. White Oak acorns have the least tannic acid and the large rock oak the highest content.