Urban and forest are not polar opposites. The large-scale treed areas of our northeastern cities like Central Park (Manhattan) and Franklin Park (Boston) are typically associated with the term urban forest. However, sidewalk and frontage trees provide a range of functions for the city that translate to cleaner air, summer shade and winter heat, beautiful streets, and connections to nature in the city.
t r e e i n f o provides information on the ecological functions of the urban forest -- how to create and support your localEcology. Please submit photographs & stories that illustrate your eco-spaces and to foster a better understanding of city trees and forests through example.
insects and diseases
Insects and diseases target Family and Genus categories not always specific species. All maples are susceptible to maple anthracnose; red oaks are more susceptible to oak wilt while white oaks are more susceptible to gypsy moth (see the USDA Handbook). Trees in the rose family like serviceberry, hawthorne, crabapples, cherries, pear, and mountainash are susceptible to fire blight (see IPM strategies). Honey locust and mimosa trees are susceptible to the mimosa webworm (Satamour's research on Gleditsia). The emerald ash borer kills green, black, and white ash trees . Asian long-horned beetle (ALB) attacks trees across several genuses including maple and willow species (horsechestnut and American elm).
~ Frank Santamour Trees for Urban Planting: Diversity, Uniformity, and Common Sense, USDA
~ Carol Stocker Old trees struggle to stand their ground, Boston Globe, 1/30/02