Plan. Cal Clip A tree can provide beauty and shade to any landscape. But before digging-in, be sure to take action to avoid future disasters. Plan a safe spot by looking up a simple rule: consider the tree's mature height as the distance to plant from a power line. With a location selected, call 811 two days before breaking ground this free service will mark all underground gas and electric lines. Once your tree is planted and growing, clip your branches to keep them away from power lines NorthWestern Energy Delivering a Bright Future Get all the facts at NorthWesternEnergy.com/trees