Tree selection for urban and suburban landscapes

One method of choosing a tree for a particular site is to drive around town to find out which species grow well in landscapes with similar site attributes. The problem with this approach is that most people do not do it, and when they do, it can create urban landscapes with little species diversity. The other problem with this approach is the soil conditions at your planting site may be different from other sites around town. Many professionals who specify trees for urban and suburban landscapes visit arboreta and botanic gardens. This is good because it potentially brings new plants to our urban landscapes. Others rely on books and computer software to choose trees. This is reasonable, however the specific planting site must first be evaluated to determine the cultural and physical attributes required of trees at the site. Click here for site evaluation form.

Trees grow when selected according to plant requirements and site conditions. In order to maintain the desired habit or form to fulfill a design function, cultural requirements must be met. The site has to be evaluated to understand the cultural requirements. To accomplish a complete site evaluation one must visit the site and get dirty. There is no substitute. Trees that are able to grow on the site can then be listed using various references including this book. Inclusion of ornamental attributes like shape, color, texture, etc. can then narrow the list to a reasonable number of trees to select for planting. Easy! Right? Well, let's see.

There are five components to choosing trees for a planting site. Begin by evaluating 1) site attributes, 2) potential site modifications and 3) tree maintenance (management) capabilities. Then 4) choose desirable tree attributes, and 5) select appropriate trees for the site. It is a process that many people do not undertake. See the site evaluation form that can serve to guide you through the evaluation process.

click here to go to Ed Gilman's tree planting main page