Are there invasive species way up here in Northern Maine?

Here is the Science Notebook I kept while investigating a potential stand of giant hogweed in Van Buren, Maine.

Project Information
City or Town: 
Van Buren
Species: 
Scientific name:
Heracleum mantegazzianum
Common name:
Giant hogweed
Habitat: 
Upland - Forest
How should others reference your work?: 
pparent, Science Notebook for Van Buren Investigation, Vital Signs Program, August 2010