Find out about common North American trees with pinnate leaves. Learn how to identify hickory, ash, walnut, black locust, and pecan using this guide.

Fall has come early for many homeowners with ash trees on their properties. First, the leaves sprouted orange dots. Now, many have shed most if not all of their leaves.

According to records submitted to Nature's Calendar so far this year, oak is leafing first, with the first recorded observation coming in on 21 March. Ash leaves weren't recorded until 4 April ...