Disease

Disease

leaf blister

About

Whether they are caused by fungi, bacteria, viruses, or some other microorganism, plant diseases can quickly cause some of the plants in our yards, gardens, and homes to decline or die. Learn how to identify and manage common diseases in the Iowa landscape.

Image of anthracnose on a sycamore leaf
Anthracnose on shade trees
Images of leaves from an apple tree with a case of apple scab
Apple Scab
Shot hole symptoms caused by a bacterial pathogen in apricot leaves
Bacterial Spot on Stonefruit Trees
slime mold

Managing Strange-Looking Fungi in Landscape Mulch

Wood chips and shredded bark are commonly applied to landscape areas to control weeds and conserve soil moisture.  Wood chips and shredded bark are organic matter.  The decaying organic matter provides an ideal environment for some strange-looking fungi or fungal-like organisms when weather conditions are favorable.  Fungi that occasionally grow in landscape mulches in Iowa include stinkhorns, slime molds, and bird’s nest fungi. 

Frequently Asked Questions

Disease Expert

Chelsea Harbach

Chelsea Harbach

Plant Disease Diagnostician
Identification and Management of Plant Diseases
Mushrooms
Integrated Pest Management