Thinning an orchard is usually the toughest job any pecan grower under takes (photo at right). The hard part is not running the chainsaw, but having to watch trees, that you spent years growing, fall to the ground. At first, a recently thinned orchard looks sparse. But, within a few years the remaining trees grow rapidly to fill the space. A year or two after thinning, you will start wondering how in the world you ever mowed around so many trees (before you thinned).