The Sawtooth Oak was first introduced to the U.S. in 1862 and has proven to be a very beneficial tree for wildlife. I have read numerous articles about them and have yet to see a negative article for any reason. A lot of them written by professors at many of the universities that specilize in forestry. It doesn' t compete well with other timber types so the taking over of our forest isn' t a concern. I' ve seen a number of them growing and havn' t witnessed advancing reproduction.