How are trees trimmed?
The goal is to keep the trees healthy while making sure that they don’t interfere with the power lines. We follow the lateral /directional pruning method developed by the International Society of Arboriculture (ISA) and approved by the National Arborists Association, and National Arbor Day Foundation. Lateral pruning makes the overall structure of the tree stronger and more resistant to high winds and heavy ice. Further growth is directed away from power lines. Black Hills Power does not “top” trees, also known as rounding over or shaping. Topping is discouraged by the National Arbor Day Foundation because it makes trees more susceptible to disease and insect problems.
The goal is to keep the trees healthy while making sure that they don’t interfere with the power lines. We follow the lateral pruning method developed by the International Society of Arboriculture (ISA) and approved by the National Arborists Association, National Arbor Day Foundation, and Metro Tree Ordinance. Lateral pruning makes the overall structure of the tree stronger and more resistant to high winds and heavy ice. Further growth is directed away from power lines. Black Hills Power does not “top” trees, also known as rounding over or shaping. Topping is discouraged by the National Arbor Day Foundation because it makes trees more susceptible to disease and insect problems. The degree to which a tree is trimmed depends on the tree species, voltage of power lines, and how close branches are to those lines.
