The Accelerator® air root pruning system is a natural way to help grow a better tree with a stronger root structure from propagation to final planting in the ground. The unique design of the Accelerator® container employs vertical corrugations to guide the root tips to air pruning slots located along the sidewall of the container. This results in a denser, more uniform root mass and eliminates root circling. Plus, a healthier root structure means the shelf life can be extended without worrying about plant distress.