The 'urban forest' refers to all vegetation, both public and private, which is found growing in cities, towns, and communities throughout America. Portland is known for its large expanse of trees growing along streets and streams, in parks and natural areas, and in neighborhoods and residential yards. Shortly after Portland became incorporated in 1851, early pioneers began planting trees by the thousands. The first parks, Chapman and Lownsdale Squares and the Park Blocks, were set aside in 1852. In 1871, the Park Blocks were planted with hundreds of American elms, which add considerable beauty and shade to downtown.

Today, thousands of trees and over 10,000 acres of parks and natural areas grace our city. Thanks to the ongoing efforts of city administrators and local citizens, our urban forest continues to contribute to Portland's well-being. But, to assure the future existence of our urban forest, everyone must work collectively to protect and enhance this vital asset. Learning how to properly plant, maintain, and preserve your own trees is the most effective action any citizen can take.