This study examines attitudes toward urban green space among homeowners in the River Rouge Watershed of southeast Michigan. Trees play a significant role in urban areas by providing numerous environmental, economic and social benefits to community residents. But public attitudes toward trees are not well understood. Through survey research we found that residents are most likely to value trees for personal benefit (like shade) but that social reasons are also valuable (improving the neighborhood). We also illustrate that cost is not an impeding factor in willingness to plant trees. Finally, our study reveals that homeowners felt tree planting is both an individual responsibility as well as a government responsibility. On the basis of these findings, we recommend that urban forestry policy should focus on education and outreach in an attempt to marry tree-planting initiatives to the individual benefits of trees as well as the community benefits of urban green space.