The urban forest is all trees, greenery, tree soil, and site resources of an urban environment. Benefits of the urban forest include reducing the urban heat island effect, improving air quality, aiding in stormwater control, and increasing overall livability, but trees must be healthy and reach maturity for residents to fully enjoy these benefits. This research addresses both biological and sociological factors that influence sustainable benefits. From a biological perspective, some urban trees are often planted in small concrete planters called tree vaults, which can negatively impact tree health. Examining the use of biochar, a carbon-based soil amendment, I found that different biochar application methods are better for different management objectives. From a sociological perspective, with intention to communicate with diverse stakeholders, I found that although trees have value within the neighborhood, resistance to tree planting is due to immediate perceptions of risk coupled with capacities to address concerns.