<http://schema.org/alternativeHeadline>
"Invasive plants wreak havoc on ecosystems because the various species that keep them in check in their native habitats are not present in American landscapes."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/organic-farming-gardening/stories/how-to-be-aware-of-invasive-plants-as-you-plan-your>