December 9, 2016

Emerald Ash Borer Confirmed in Clarke County

Emerald Ash Borer Detections in Iowa

Emerald ash borer, an invasive beetle that attacks and kills ash trees, has been confirmed in Clarke County in Iowa.  The discovery in the city of Osceola brings to thirty-nine the number of counties within the state where EAB has been confirmed. 

Handling Poinsettias during the Holiday Season

One of the best parts of the holiday season is adding colorful seasonal plants to the home. That includes the poinsettia. However, poinsettias do require special care to reach their full potential.  Read more about poinsettia care in the Iowa State University Extension and Outreach yard and garden news release from November 30, 2016.

Christmas Tree Facts and Legends

During the holiday season, Christmas trees make appearances across Iowa and across the nation as part of the season’s celebration. But there’s plenty to learn about these popular trees.  Read more about tree care in the Iowa State University Extension and Outreach yard and garden news release from December 7, 2016.

Gift Ideas for the Gardener

It can be difficult to find the right gift for everyone on your Christmas shopping list.  If there's a gardener on your list, consider some of the following. 

2016 Plant and Insect Diagnostic Clinic Annual Report

Distribution of Samples by Type

From January to December 2016, the PIDC clinic received 1420 samples see distribution in the chart below.

Phytophthora Shoot Blight in Lilacs

Phytophthora shoot blight on lilac

This fall we received several inquiries concerning problems with lilacs. Lilacs suffer from vascular pathogens and bacterial diseases, but also a blight caused by a water mold. Water molds belong to the Oomycetes (also known as Stramenopila), microorganisms that despite their similarities with fungi, are closely related to algae.

Plant and Insect Diagnostic Clinic Update

The following are highlights and updates about samples and questions recently received in the Plant and Insect Diagnostic Clinic. Visit the PIDC's Facebook page to ask questions and for updates and more pictures.