We talked with Terrestrial Invasive Species Coordinator for the DNR Laura Van Riper about what buckthorn is and how to control it. Laura gave us an idea of how to control and get rid of buckthorn if you have it in your yard.
It's not too late to identify and control invasive buckthorn
DNR
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http://www.dnr.state.mn.us/invasives/terrestrialplants/woody/glossybuckthorn.html