Garlic Mustard Raises a Stink

Living on Earth
A gourmet introduced the garlic mustard plant to his Long Island garden in 1869. One hundred forty years later, the weed has spread across 34 states and into Canada with no signs of stopping. Ecologist Adam Davis of the Agricultural Research Service of the USDA tells host Steve Curwood how biological control offers a promising way of dealing with the garlic mustard problem.
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