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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.
Like other nut bearing trees, oaks produce a large amount of acorns; unlike other nut-bearing trees (pecan, walnut and hazelnut) the seed nuts cannot be consumed by humans or most animals because of the tannin in the seed. A huge quantity of acorns must be produced for an oak to propagate itself.