Mason bee nests in the orchard of Robert Schreiber at Poysdorf, Austria, pictured during an International Fruit Tree Association tour Growers should think not about species of beneficial insects, but develop strategies, such as insectaries, to benefit the whole community of natural enemies and pollinators, advises Paul Jepson, director of the Integrated Plant ­Protection Center at Oregon State University, ­Corvallis. “We have a wonderful array of organisms to exploit by these tactics,” he said during a recent workshop on habitat and conservation practices for beneficial insects on farms. Some natural enemies, such as beetles and spiders, are resident on the […]