| Center for Urban Forestry at Morris Arboretum: Provides technical expertise and professional support for urban/environmental programs in the mid-atlantic and northeastern area of the United States. |
| Natural Landscapes in Urban Areas: Essay on the need for parks and other wildlife areas in urban environments. |
| Texas Urban Forestry Council: Site provides information about the organization's programs, invasive pests, trees, has links to related sites and has a news page with urban forestry related articles. |
| The Arbor Day Foundation: Information on tree and shrub care; education resources related to trees; promoting the planting and maintenance of urban forests through Arbor Day programs, Tree City USA, and other programs. |
| Tree Ordinance Guidelines: A handbook for the development and evaluation of local urban forestry programs. |
| USDA Forest Service, Urban Forest Research: Information on current research on the effects of the urban forest on air quality, climate, and carbon dioxide; as well as, research on urban forest management. |
| Western Center for Urban Forest Research and Education: Includes latest in urban forest research: GIS, inventory and monitoring, parking lot shade ordinances, urban heat islands, and guidelines for tree planting. |
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