Well … annihilating a civilization of aphid infesting the citrus section by blasting it with pressurized water may give one the illusion of power. It might help to belt out a comic strip villain laugh when you do it. Really though, there is not much power in the retail nursery industry. Retail nurserymen only occasionally get to help customers select trees that may be prominent features of their gardens for decades or centuries. Even more rarely, they have the power to select many trees for larger projects, like street trees for the medians of a main boulevard (if a landscape designer did not already blow that one). That is sort of like power… isn't it?