eXtension www.extension.org
Excellent resource for anyone needing information about managing wildlife problems. eXtension is an educational partnership of more than 70 land-grant universities helping Americans improve their lives with access to timely, objective, research-based information and educational opportunities. eXtension's interactive web site (below) is customized with links to local Cooperative Extension webs sites.

Invasive Plants
Invasive plants are an important issue in Massachusetts and retail garden centers should be aware of what plants are considered to be invasive. Invasive plants, as defined by the Massachusetts Invasive Plant Group, are "plants that have spread into native or minimally managed plant systems in Massachusetts. These plants cause economic or environmental harm by developing self-sustaining populations and becoming dominant and/or disruptive to those systems." For a list of invasive plants, including banned plants in Massachusetts and more information, see the websites below.

USDA National Invasive Species Information Center- Massachusetts
Massachusetts Department of Agricultural Resources - Massachusetts Prohibited Plants
Massachusetts Nursery Landscape Association