You might be thinking, “What the heck is opposite branching?” It basically means the branches extending from the limbs have a mate protruding from the exact opposite side of the same limb. Keep in mind that ash, dogwood, maple, and horse chestnut are the only trees that have opposite branching.
A leaf that has a bud at the base of the stem is known as a simple leaf. A compound leaf, on the other hand, has more than one leaflet per leaf that connecting to a stem that has a bud at its base. It’s common for ash tree leaves to have anywhere from five to nine leaflets per leaf.
This is another simple identification method. When you first plant an ash tree, you’ll find it has fairly smooth bark. As ash trees mature, though, they tend to have distinct diamond patterns.