How did Montana become infested with knapweed?

"I've heard so many different stories about how it got here and who's responsible, and I've never really heard the legitimate reason, and I thought that's a good question for you guys."

Related Keywords

Montana ,United States ,United Kingdom ,Missoula ,Missoula County ,Washington ,Massachusetts ,America ,British ,Chris Evans ,Caleb Slemmons ,Kathleen Shannon Melissa Maggio ,Freddy Monares ,Melissa Maggio ,Kathleen Shannon ,Liz Nielson ,University Of Illinois ,National Ecological Observatory Network ,Missoula Extension Office ,Montana Natural Heritage Program ,Us Forest Service ,Him Department ,Montana Public Radio ,Jim Jerry ,North America ,British Columbia ,Montana The ,World War ,Jerry Marks ,Montana Biocontrol Coordination Project ,