


Montgomery County, Md., launched the nation's first "Weed Warriors" program in the late 1990s: a group of volunteers certified to fight invasive plant species in area parks. Rebecca Sheir heads to Wheaton Regional Park with Weed Warriors founder Carole Bergmann and certified Weed Warrior Kathy Jentz, to hear about the group's latest struggles battling such a tricky foe.
[Music: "Warrior" by Patty Smyth/Scandal from Greatest Hits]

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