Connecticut Horticulture Society

The Connecticut Agricultural Experiment Station

CT NOFA , Connecticut Chapter of the Northeast Organic Farming Association

Connecticut Tree Protective Association

Department of Environmental Protection

The Friends of Elizabeth Park

The Helpful Gardener

New York State Agricultural Experiment Station

The Ohio State University Online

UCONN Cooperative Extension System

UCONN Home and Garden Education Center Programs

UCONN Integrated Pest Management Program

UCONN Plant Database

UMASS Extension Service