The Dow Chemical Company (NYSE: DOW), commonly referred to as Dow, is an American multinational chemical corporation headquartered in Midland, Michigan, United States.
Pecan trees can grow over 100 feet (30.5 m) tall, and they have root systems that stretch deep and wide. They need plenty of space, whether you're planting them in your yard or in an orchard. When you're choosing a spot, take the following into consideration: Make sure there are no buildings or other trees nearby.
1 A pecan tree could damage buildings or smaller trees with falling branches as it grows bigger.  In an orchard, plant the trees at least 60 feet (18.3 m) apart. Allow for approximately 35 feet (10.67 m) spacing between each pecan tree that you plant.