Root damage is usually caused when tree roots remain close to the surface of the soil. Tree roots can cause costly damage to paving, structures or even water and sewer lines. Because roots nearer the tree trunk will enlarge earlier and grow more rapidly, care should be taken to space trees appropriately from structures. Local environmental and tree care conditions, such as soil type or watering habits, can affect a tree's root development. Long, deep waterings can encourage downward root growth. Shallow soils will force roots to grow horizontally rather than vertically.

Within SelecTree "Root Damage Potential" attempts to qualify the tendency trees have of causing damage with their roots. The terms 'Low', 'Moderate' and 'High' are used in this category. Avoid planting trees with high root damage potential near structures (PG&E, 1994).

Look for "Root Damage Potential" in the SelecTree Attribute Search
See also Roots of the Urban Forest