Mississippi State University Extension Service - Did you know you can use an acorn's shape, color and size to determine the oak species it's from? Here are five of the most common
![The water oak is very similar to the willow oak, and both species produce small acorns. - Mississippi Sportsman The water oak is very similar to the willow oak, and both species produce small acorns. - Mississippi Sportsman](https://i0.wp.com/www.ms-sportsman.com/wp-content/uploads/2011/12/p1321394194.jpg?fit=1024%2C683&ssl=1)
The water oak is very similar to the willow oak, and both species produce small acorns. - Mississippi Sportsman
![Quercus nigra (Black Oak, North American Barren Oak, North American Black Oak, Oaks, Possum Oak, Water Oak) | North Carolina Extension Gardener Plant Toolbox Quercus nigra (Black Oak, North American Barren Oak, North American Black Oak, Oaks, Possum Oak, Water Oak) | North Carolina Extension Gardener Plant Toolbox](https://s3.amazonaws.com/eit-planttoolbox-prod/media/images/Quercus-nigra-acorn--Bruce-Kirchoff--CC-BY-NC.jpg)