Images for Powdery mildew, crabapple scab and sycamore anthracnose have already been posted to this site. Please use the search function to find these photos.
Tag Archives: 2011
Disease Hotline Issue 8
Cedar apple rust, cedar quince rust, and Iris leaf spot have images already posted to the site. Please use the search function to locate these pictures.
To the left is azalea petal blight. Photo provided by Bob Mulrooney, University of Delaware
Insect Hotline Issue 8
Damage on leaf caused by hawthorn leaf miner. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org.
What’s Hot HL Issue 7?
Pictures of Cedar quince rust have been posted to the website previously. Please use the search function to locate these images.
Feeding damage caused by bristly roseslug sawfly larvae on the underside of the leaf. This sort of damage is often called ‘window-paning’.
Roseslug sawfly larva feeding on the underside of the rose leaf.
Close-up of the roseslug sawfly larva. Roseslug sawfly photos provided by: Brian A. Kunkel, University of Delaware, Ornamentals IPM Extension Specialist
Disease Hotline Issue 7
Picture to the left is of beech anthracnose. Photo provided by Nancy Gregory, University of Delaware, Plant Diagnostician
Photos for Apple scab, sycamore anthracnose & powdery mildew have been posted to the website previously. Please use the search function to locate images.