The beginnings of Buckthorn in this country were innocent enough. The ornamental shrub was brought from Europe in the 1800's as a landscaping hedge. It grew well, a little too well, and today Buckthorn is another one of those invasive, non-native species wreaking havock on the state's native plants. It invades forests, and chokes out new plant growth. Naturalists in Minnesota are fighting Buckthorn, they say if it grows unchecked, it could seriously harm the state's woodlands. Mainstreet Radio's Tim Post reports.