How Far from Buried Power Lines Can I Plant a Tree?

Significance

• Colorado State University notes that only trees that mature to small size, such as around 20 feet tall, are appropriate around utility wires and poles. However, these same trees extend their roots far from the trunk. Even planting small trees too close to underground lines causes thick and fibrous roots to create a matrix around the cables.

Types

• Avoid planting tree species known to develop extensive, shallow root systems when underground utilities exist. Red maple and magnolia trees grow roots close to the surface, and large-maturing trees like oaks and beeches are poor choices because of their massive, spreading root systems.

Prevention/Solution

• Plant small-maturing trees no closer than 20 feet from underground power lines. Avoid large-growing trees altogether. Some fine, smaller diameter roots eventually reach the soil around the power cables, but are easily cut if necessary. These small, outer roots are quickly replaced and do not compromise the stability of the tree.