All oaks produce acorns. Acorns belonging to trees in the red oak group take two growing seasons to mature; acorns in the white oak group mature in one season. Oak trees have greenish, inconspicuous female flowers and are wind pollinated.

Are oak trees the only trees with acorns?

Only one type of tree produces an acorn, but this includes more than 500 individual species. The acorn nut is specific to trees in the Quercus genus, collectively referred to as oaks.

Where does an acorn come from?

Acorns are the fruit of oak trees. There are hundreds of species of oak trees around the world, with about 90 oak trees native to the US.