Green Horizons

ILLUSTRATION COURTESY OF THE NATIONAL ARBORDAY FOUNDATION

To avoid many future tree care problems in the urban setting, get the right tree in the right place.

Right tree right place

By Eugene L. Brunk

Finding the correct tree species for any given spot, in an urban landscape setting, will enhance the value and appearance of your property. It also helps to avoid many future problems due to an improper location or poor species selection for the planting site. Trees in urban settings are troubled by growing conditions that are less than ideal due to the removal of topsoil, soil compaction, soil contamination, air pollution, or lack of growing space. The more limitations on the growing site, the more care needed when selecting trees. It starts with evaluating the site.

Determine where you want to plant a tree and what you want it to provide, whether it is shading your driveway, separating two yards, screening the street, providing cover for songbirds or a nice seasonal color. Figure out why you want the tree there.

In your chosen area, calculate the amount of space there. Then, pick a tree that, at maturity, will fit the space. Monitor the site and determine how much sunlight it receives throughout the day. Some trees grow well as understory trees and can tolerate shade well. Others require full sunlight for best growth.

Check out the soil and make sure it is at least 3 feet deep and allows water to percolate through it while retaining adequate moisture for the roots. Some organic matter is desirable, as is slightly acidic (pH 5 - 6) soil. Without good soil, trees will have more problems. To find out more about soil testing, contact your local UMC Extension office, or go online to extension.missouri.edu.

A percolation test can be administered, too, by digging a hole 12 - 18 inches deep and filling it with water. If there is water remaining 12 - 18 hours later, then you have heavily compacted or clay soil. Such soils may hold too much water and suffocate the roots. Conversely, very sandy or gravelly soils may not hold enough water for some trees.

Careful evaluation of the planting site and having a specific objective for the tree will go a long way in helping find the right tree for the right place.