NEW ORLEANS (NEXSTAR) — A stinky but handsome and widely popular landscape tree has become an aggressive invader.
Callery pears create dense thickets that overwhelm native plants and bear four-inch spikes that can flatten tractor tires.
Bradford pears and other ornamental Callery pears were cultivated from an import that saved pear orchards from a deadly bacterial disease. And for decades, the decorative trees seemed near perfect, aside from a tendency to fall apart after about 15 years — and their stench.
But they cross-pollinated with other ornamental varieties.
Invasive stands now have been reported in more than 30 states. Fourteen states have formally listed the trees as invasive.
The Pennsylvania Department of Agriculture has decided to place a phased ban on the Callery Pear, giving nursery owners time to draw down their inventories.
Missouri’s Department of Conservation is holding a buyback program for the tree. To qualify a property owner must provide a photo of a cut-down pear tree in order to earn a free, less offensive, replacement tree.
The Associated Press contributed to this report.