The coming of autumn often makes trees harder to identify — but sometimes, it does the opposite. The black locust (Robinia pseudoacacia) is a case in point. In summer, its bluish-green, oval-shaped, ...

Black locust is a member of the legume family; it can “fix nitrogen” in the soil. It is native to the Appalachian Mountains, from Pennsylvania to Alabama. However, in the last century, it has spread ...

Trees are indispensible for life as we know it. They clean our air, shade our streets, anchor our soil, and bring beauty to our landscapes. Beyond their environmental services, trees carry deep ...

Honey locust (Gleditsia triacanthos) is a deciduous and thorny legume tree that is aggressive and fast-growing. The tree’s bark is grayish-brown and furrowed with long, scaly ridges. Honey locusts ...