Apple maggot is not difficult to control, but it is a serious problem if found in orchards because it’s a quarantine pest. Apple maggot is native to the eastern United States. It was first noticed in northern Oregon in 1979 and has since spread through western Washington as far as the border with Canada, Tim Smith, Washington State University Extension educator, explained at the Lake Chelan Horticultural Day. It was found in Spokane in eastern Washington in 1982 and during the past decade has spread to Washington’s main apple-producing regions in central Washington. In 1995, it was found in Yakima, […]