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ELA collaborates with a number of ecologically-focused regional and national organizations. The following list links to organizations or informational directories that our membership and audience may find of interest; however, a link on the ELA site does not imply the Alliance’s endorsement or support of any linked site or organization, or of any content that may be found on a linked site.

Please contact our webmaster if you know a website we should include, or if you have any questions or comments about existing links.

Other Ecologically Minded Organizations

American Horticultural Society

Association to Preserve Cape Cod


Boston Architectural College

Boston Natural Areas Network – now The Trustees of Reservations

Brooklyn Botanic Garden

Cary Institute of Ecosystem Studies

Center for the Environment

Chesapeake Conservation Landscaping Council

Coastal Maine Botanical Gardens


The Conway School

Delaware Center for Horticulture

Earth Share – National

Ecolandscape California

Ecosystems Center

Earth Share – New England

Ecological Designers and Engineers Network

Ecological Farming Association

Ecological Society of America

Ecotype Project

Environmental Protection Agency Soak Up the Rain

The Evergreen Foundation

Green Roofs for Healthy Cities


Goundwork Bridgport

Illinois Landscape & Contractors Association

International Assoc. for Landscape Ecology – US Regional

Land’s Sake

Massachusetts Audubon Society

Midwest Ecological Landscape Alliance

Million Pollinator Garden Challenge

National Garden Association

Native Plant Channel

Natural Areas Association

The Nature Conservancy

New York Botanical Garden

NOFA Vermont

Northeast Organic Farming Assoc. of Massachusetts

NOFA Organic Land Care

Organic Growers School

Perfect Earth Project

The Plant Conservation Alliance

Polly Hill Arboretum

Quiet Communities


Rodale Institute

Society of Environmental Journalists

Society for Ecological Restoration International

Sustainable Communities

Sustainable Sites Initiative

Tower Hill Botanic Garden

The Trustees of Reservations

Wild Ones: Native Plants, Natural Landscapes

Xerces Society

Plants and Seeds

Maine Native Plant Nursery

Wild Seed Project


Soil Science Society of America

UMass Soil Testing Lab

Invasive Plants – Center for Invasive Species and Ecosystem Health

The Invasive Plant Atlas of New England

The Invasive Plant Atlas of the US

National Invasive Species Information Center

National Park Service Plant Conservation Alliance

Native Plants and Seeds

Grow Native Massachusetts

Helia Plant Nursery

Kansas City Native Plant Initiative 

Lady Bird Johnson Wildflower Center Native Plant Database

Massachusetts Natural Heritage Program

Native Plant Center at Westchester Community College

Native Plant Network

Native Plant Trust

New England Botanical Club

Rhode Island Wild Plant Society

Sustainable Seed Company

Wild Ones: Native Plants, Natural Landscapes

Wild Seed Project

Plant Care (General)


Garden Guide

New England Landscape Design and History Association

The PLANTS National Database

United States Department of Agriculture – Hardiness Zone Map

University/Extension Services

Cornell University Extension Service

Purdue University – Turfgrass Program

University of California Cooperative Extension

University of Massachusetts Extension Service

University of Minnesota Extension

Yale School of Forestry & Environmental Studies

Professional Groups, Guides, and Information

Association of Professional Landscape Designers

Boston Society of Landscape Architects

California Landscape Contractors Association

Massachusetts Association of Landscape Professionals

Massachusetts Association of Conservation Commissions 


UMass Extension Green Information

Vermont Nursery and Landscape Association

Arboriculture (Tree Care)

International Society of Arboriculture (ISA)

State Urban Forestry Coordinators

Botanic Gardens and Arboreta

Arnold Arboretum

Brooklyn Botanical Garden

Connecticut College Arboretum

Garden in the Woods

Maine Botanical Gardens

Mount Auburn Cemetery

New York Botanic Garden

Tower Hill Botanic Garden

Water and Water Sheds

American Water Works Association Consumer Center

California Landscape Contractors Association

The Groundwater Foundation

Massachusetts Audubon Society – Rivers Website

North American Water Garden Society

Organization for the Assabet River

Project Clean Water

Parker-River Watershed

Soil and Water Society, Southern New England Chapter

US EPA Surf Your Watershed

US Geological Survey Water Resources of the US



Cornell Lab of Ornithology

MSPCA Wildlife Help Center

The Massachusetts Audubon Society

National Audubon Society

The National Wildlife Federation

Pest and Disease Issues

Colorado State – Organic Pesticides

The Lyme Disease Resource Center

Massachusetts Introduced Pests Outreach Project

National Pesticide Telecommunication Network

North Carolina University – Center for IPM (design)

Northwest Coalition for Alternatives to Pesticides

Toxic Action Center

Government Agencies

City of Seattle Public Utilities

Louisiana Dept of Environmental Quality – Butterfly gardening

Missouri Department of Natural Resources

Publications or Resource Sites


Environmental Yellow Pages

Green Alliance

Green America

Wild Seed Project