The Black Locust grows in its native range in open upland sites in two regions: the Appalachian Region from central Pennsylvania and southern Ohio down to northern Georgia & Alabama and the Ozark Region of southern Missouri, Arkansas, and east Oklahoma. However, mankind has spread it all around the South, the Midwest, the Mid-Atlantic, and the Northeast of the US. I think I saw some running around wild in southern Germany in 1981. It often is a weed tree, growing in abandoned lots, alleys, and waste places. It is fast growing of 2 to 3 feet/year and lives about 50 to 100 years. The fragrant white pea-like flowers are nice. The rest of the tree is not ornamental. It is weak-wooded and very messy by dropping lots of twigs, branches, and brown, woody, legume pods; and it can form a colony from prolific root suckering. I don't recommend it for landscaping and I don't know of any nurseries that sell any. It is considered as a non-native invasive plant in many states where it is not in its original native range. I don't mind some wild trees around, but not too many. It is good for reclaiming and stabilizing land where there were coal mines and it does fix nitrogen into the soil.