Answers to the Invasive Plant Species Quiz

1. False.
   According to the New England Wild Flower Society (NEWFS), only about 10% of invasives arrived by accident, with horticultural activity (such as gardeners, botanic gardens, arboretums) responsible for introducing about 60%, with the remaining 30% brought in through conservation activities (Dept of Agriculture, Soil Conservation Service) such as, erosion control, for use in screening and windbreaks, and to supply wildlife with food and cover.

2. False.
   At least 25 invasive plant species have been identified in the Emerald Necklace.

3. True.
   Invasive plants crowd out native plants. They tend to have very aggressive root systems, produce copious amounts of seeds, and lack the natural predators that would keep them in check.

4. False.
   Some studies suggest that the fruits and seeds of invasives are less nutritious for native wildlife, thus requiring them to eat more frequently.

5. Can you identify some of the invasive species we have right here in the Emerald Necklace? Match each photo with the name of the invasive species from the list.

A. Glossy Buckthorn - 4

B. Garlic Mustard - 3

C. Japanese Knottweed - 1

D. Oriental Bittersweet - 2

E. Phragmites - 5