It's a good thing this time of year to be able to recognise trees by their bark. This very distinctive bark belongs to Black Locust, Robinia pseudo acacia. The bark is thick, dark brown, and deeply furrowed. It has feathery compound leaves, that are dropping as we speak.
Black Locust is native to North America, and believed to have originated in the Appalachian Mountains. The wood is strong, and durable in the soil. Early settlers valued this quality and used it for building timber. Today it is widely used for fence posts. I've read that Locust posts set in the ground will remain sturdy for 50 years!!!
They grow like weeds, sending up new shoots from the roots. It's best to keep them under control in this new sprout stage, because they soon grow thorns all along the trunk. They are really hard to pull out then!!
Black Locust blooms in May and June with showy, white, fragrant blossoms in clusters. When it's blooming, it's easy to see that it is a member of the Pea family. And the seeds are encased in 2-6 inch flat brown pea-like pods that remain on the tree from September to April. The seeds are eaten by bobwhite, mourning doves, rabbits, and deer; but the roots, bark, leaves, and seeds are poisonous to humans and some livestock.
At one time the bark of Black Locust was used by American Indians as remedies for headache, stomach pains, and nausea, but because the tree contains toxic substances, it is no longer used medicinally. Today the wood is used for fence posts, railroad ties, and mine timbers. And since the trees grow so fast, they are favored by conservationists for erosion control.
So, what may be a weed to one person may be building materials to another. I think it is beautiful when it's blooming, so I'll post Black Locust again in the spring. Maybe I'll learn more about it by then.
HAPPY GARDENING!!