Lady Bird Johnson Wildflower Center.
Presents extensive information and images on native plants. Includes recommended species by state, a plant and seed suppliers list, an organizations list, how-to guides and a Native Plant Bibliography.
Lawns and Turf, Landscaping, and Ornamental Plants
The Pennsylvania State University.
Provides online reference materials to resources related to turfgrass.
New York State. Department of Environmental Conservation.
Provides tips and resources for a chemical free yard. Includes sections for homeowners/residents and lawn care/landscape professionals.
USDA. NAL. Alternative Farming Systems Information Center.
Provides information about plants that have adapted naturally in your area and how to use them in the landscape to maintain and improve the environment.
Environmental Protection Agency.
Outlines costs and benefits of green roofs, and gives references and links to more information.
Michigan State University.
Describes extensive work on green roofs. Includes list of research articles and list of useful links.
Northeast Organic Farming Association Organic Land Care Committee.
Offers accreditation courses, homeowner workshops, guidelines and educational materials for organic lawn and landscape practices.
USDA. Forest Service. Urban Ecosystems and Social Dynamics Program; EcoLayers.
Web-based software program designed to evaluate the economic trade-offs between different landscape practices on residential parcels. Users test various alternatives to arrive at environmentally and economically sound solutions for energy, water and fire management.
University of Minnesota. Cooperative Extension Service.
Covers landscape design, plant selection, design implementation and landscape maintenance.
Environmental Protection Agency.
Information on landscaping for water-efficiency with a focus on native plants of the United States.