Invasive Plants and Species

What is an Invasive Plant?
Invasive plant species are plants introduced from outside of an ecosystem with characteristics that help them dominate and limit the diversity of species within the invaded area. Their threat lies in an ability to spread aggressively and reproduce prolifically, easily out-competing native plants for light, space and nutrients.

 Introduction of an invasive plant species can quickly result in a reduction of native plant species and of habitat for native wildlife. Once established, invasive plants are extremely difficult to control and  restoration of the natural ecosystem can  require large amounts of financial and labor resources. Early detection and rapid response is the best and most cost effective approach to controlling  invasive plant species.

Resources on Invasive Plants
The Massachusetts Prohibited Plant List

Pennsylvania Field Guide Common Invasive Plants in Riparian Areas

Mistaken Identity? Invasive Plants and their Native Look-Alikes. An Identification Guide for the Mid-Altantic

Invasive Plants Resources on

Notice from GCFM President Bonnie Rosenthall:
A new invasive species, known as the “jumping worm” or “snake worm” has the potentialjumping worm to cause serious damage to roots of plants and can cause major decline in soil composition, invertebrates, salamanders, birds and other animals. In the spring months (when we are preparing for our plant sales) the eggs of this invasive worm can survive the harsh winters in tiny resilient cocoons.  Cocoons are very small and dirt colored so they are nearly impossible to spot with your own eyes.  Cocoons can be spread easily in potted plants, and on landscaping equipment, mulch, tire treads, and even in shoes. The adult worm is hard to miss as they have a white band near the head of the worm. Jumping-worms.