EditorialDavid Coyle, a professor of forest health at Clemson University, with the invasive pear tree produced by the popular Bradford pear, in Clemson, S.C., on March 16, 2020. (Mike Belleme/The New York Times)
EditorialA worker rests in the shade of a pear tree during the final break of a work day in Phoenix, Ore., Aug. 30, 2021. (Jordan Gale/The New York Times)