Each year during the growing season The Morton Arboretum’s Plant Clinic puts out its weekly newsletter, the Plant Health Care Report (“PHCR”).

The report provides up-to-date disease and insect pest reports for northeastern Illinois, as well as a table of accumulated growing degree days (GDD) throughout Illinois, precipitation, weather, and plant phenology indicators to help predict pest emergence. It also highlights indicator plants currently in bloom, emerging pest problems, and provides management tips for the amelioration of pests and diseases.