The Morton Arboretum's Plant Health Care (PHC) reports are posted bi-weekly during April and August and weekly from May through July. Each report summarizes current tree disease and insect sightings for northeastern Illinois. The reports also include images, growing degree days and phenological indicators. Periodic feature articles offer more detailed perspectives on a range of PHC topics.

PHC Reports are in PDF format which require Adobe® Reader® to view. You can download free Adobe® Reader® software here.

• PHC Monitoring Report for May 9, 2008 (Issue 2008.04)

Download print-ready PDF (336kb)

• Special Report • The Emerald Ash Borer in Illinois

All contents © 2008 The Morton Arboretum. All rights reserved.