>What if I decide to commercially grow seedless mandarins, sometimes sold in the U.S. under the trademark name Cuties? Should I be able to demand that all my neighbors within a certain distance of my citrus orchard must now remove all their pollen producing citrus plants in order to prevent pollination of my mandarins, all because I want to profit from growing higher value seedless citrus fruit? This sort of thing happens all the time. Depends on who has the most money and influence. "The federal government had banned the growing of black and red currants in 1911 when the burgeoning logging industry put pressure on lawmakers to eliminate the currants because they were thought to be an intermediate host of white pine blister rust." http://news.cornell.edu/stories/2006/… Bob