Your production becomes more limited in anything longer than 12 feet. Robinia pseudoacacia, commonly called black locust, is medium sized, suckering, deciduous tree that typically grows to 30-50’ (less frequently to 80’) tall.Although originally native to the Allegheny Mountains, it has escaped gardens and naturalized over time to cover much of the United States and southern Canada plus parts of Europe, Asia and South America. The health and vigor of the trees are important defenses against devastation, as research has shown that good growing conditions are more important than genetic resistance. In Hungary ( Varga, 1971 ) and in Italy ( Grasso, 1971 ) frost damage is the only environmental damage reported. I see invasives.org mentions that it can become invasive in prairie and savanna areas. Foliar spray with … About the author: In a normal year, Katie Stannard would be coordinating and onboarding the summer interns at Matthaei-Nichols and helping the visitor engagement team run the visitor center at Matthaei. Leaflets are 1.5 in. The exact original/native range of the tree isn’t known, and it has spread across the United States and can now be found in the entire lower 48 states, as well as parts of British Columbia and Eastern Canada. However, the black locust is native only to southeastern North America. Black locust has just a few pests of concern, and a little observation and vigilance goes a long way. Foliage Leaves are pinnately compound with 7-21 small, round leaflets per leaf. Black locust (Robinia pseudoacacia), sometimes called yellow locust, grows naturally on a wide range of sites but does best on rich moist limestone soils.It has escaped cultivation and become naturalized throughout eastern North America and parts of the West. Noteworthy Characteristics. … Robinia pseudoacacia L.. Black Locust. Trees grow from 40-100 ft. (12-30 m) in height. Black locust requires annual and long term monitoring as it may resprout several years after herbicidal treatment appears to have eradicated it. It is still possible to produce longer length boards but the challenge then becomes maintaining board quality standards . Trees grow upright in forests, but develop an open growth form in more open areas. Foliar spray trees under 8’ tall, basal bark treat trees over 8’ tall or all trees under 4” dbh, chainsaw girdle/treat or cut/treat trees over 8’ tall and over 4” dbh. I recently received an email from a private landowner: I had a question for you about Black Locust and the Indiana’s Most Unwanted website.I saw Black Locust is listed on there even though this site says it’s native range includes Indiana. The bark of black locust is light brown, rough, and becomes very furrowed with age. Although black locust is moderately frost hardy in the southern and central plains of the USA, cold weather damage has occurred in the colder parts of its range (Roach, 1965). Humans have greatly expanded the range of the black locust. Can you shed a little light on this? The average length of Black Locust sawlogs falls predominantly into a range of 8 to 12 feet. It is native to the Appalachian Mountains and Ozark Plateau, with its native range reaching from central Pennsylvania to Alabama and Georgia. Black locust (Robinia pseudoacacia L.), also known as false acacia, post locust and yellow, white or green locust, is a tree belonging to the pea (Fabaceae) family. J. C. Huntley. Leguminosae -- Legume family. Native range: Black locust inhabits a broad range of forest types and conditions within its native range, though it develops and grows best in the cove or mixed-mesophytic forests of the central and southern Appalachian region (review by ). All black locust stems in a clone must be treated for a chemical treatment to be effective.