Never Amend Backfill

Not only is it cheaper to use the original soil to backfill a planting hole, it is better for the plant. By digging a hole and filling it with amendments or foreign soil, you create an artificial environment with a dramatic interface between it and the surrounding native soil. The result is water does not flow freely between the two media, and plant roots become entrapped in the planting hole, much like they would in a container. At first, the plant will look normal, in fact, most plants will appear to thrive. After a while, the plant becomes virtually potbound and dies, leaving the conscientious backfiller to wonder why.