Tag Archives: 2008
What’s Hot HL Issue 10
Black spot on roses. Photo by: Brian Kunkel, Ornamentals IPM specialist, University of Delaware.
Powdery Mildew on common lilac. Photo by: Whitney Cranshaw, Colorado State University, Bugwood.org.
Fire blight on pear. Photo by: Nancy Gregory, Plant Diagnostician, University of Delaware.
Elm pouch gall (caused by aphids).
Elm pouch gall (caused by aphids). Photos of elm pouch galls by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.
Rose slug sawfly feeding damage. Photo by: Tracy Wooten, Sussex County Extension Agent – Horticulture, University of Delaware.
Rose slug sawfly. Photo by: John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org.
Insect Hotline Issue 10
Damage caused by bagworms.
Bagworm infestation.
Bagworm caterpillar. All bagworm photos taken by Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.
What’s Hot HL Issue 9
Crabgrass. Photo by: Gordon Johnson, Extension Agent, Agriculture and Commercial Horticulture, University of Delaware, Kent County.
Dunce cap stage of bagworms. Bag is held upright by early instar bagworms and is called the ‘dunce cap’ stage. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.
Calico scales. Photo by: Raymond Gill, California Department of Food and Agriculture, Bugwood.org.
Disease Hotline Issue 9
Pyracantha scab.
Red thread mycelium.
Red thread (Laetisaria). Disease photos by: Nancy Gregory, Plant Diagnostician, University of Delaware.