Also called the northern red oak, it's a beautiful tree with idyllically ... During spring, oaks drop catkins: long clumps of flower clusters. It's fairly messy and terrible for allergies.

Bark – young bark is smooth, older bark has flat topped ridges with shallow fissures; inner bark is light red. The northern red oak (Quercus rubra) is a medium sized tree that grows up to 90 feet, is ...