Identifying an ash tree can be quite helpful for various reasons, including understanding its benefits, caring for it, and being aware of its susceptibility to the Emerald Ash Borer, a harmful pest. If you’re unsure whether you have an ash tree on your property or in your area, follow these six simple steps to help you identify an ash tree.

1. Observe the bark: Ash tree bark is relatively distinctive. In younger trees, it is smooth and grayish-green. As the tree matures, the bark turns grayish-brown with pronounced diamond-shaped ridges. This pattern differentiates it from other types of trees with textured bark.

2. Analyze the branching pattern: Ash trees exhibit opposite branching patterns, meaning their branches and buds grow directly across from each other in pairs. Most trees have alternate branching patterns where branches and buds alternate along each side of a twig, rather than growing in pairs.

3. Count the leaflets: Ash trees have compound leaves that are divided into smaller leaflets arranged oppositely along a central stalk (rachis). Typically, there are 5-11 leaflets per stalk. The leaflets range in size but are generally long and slender, measuring about 3-5 inches long and 1-2 inches wide.

4. Look for serrated edges: In many cases, ash tree leaflets feature finely serrated edges that give them a somewhat feathery appearance. This characteristic can help differentiate them from similar species with smooth-edged leaves.

5. Examine the fruits/seeds: If you’re examining a mature ash tree during late summer or early autumn, keep an eye out for the distinct fruits called samaras (elongated single-winged seeds). These seeds are clustered on branches and typically measure around 1-2 inches long.

6. Identify during winter: It can be challenging to identify an ash tree during winter when the leaves are off. In this case, observe the opposite branching pattern, look for the bark ridges, and examine the tree’s buds. Ash trees have dark-colored, conical-shaped terminal buds at the ends of their twigs.

By carefully observing and analyzing the features mentioned above, you should be able to positively identify an ash tree. Once identified, you can properly care for your ash tree and monitor it for potential health issues like the Emerald Ash Borer infestation.