Black spot on roses. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.
Black spot on rose. Photo by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org.
Crabapple scab on crabapple tree leaves. Photo by: Bob Mulrooney, Plant Pathologist, University of Delaware.
Crabapple scab on crabapple fruits. Photo by: Bob Mulrooney, Plant Pathologist, University of Delaware.
Tag Archives: April
Insect Hotline Issue 2
Old spruce spider mite damage. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.
Close-up of spruce spider mite feeding damage. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.
Spruce spider mite egg and adult. Photo provided by: Photo by USDA Forest Service – Northeastern Area Archive, USDA Forest Service.
Weed Hotline Issue 4
Flowering white clover.
White clover. Photos provided by Gordon Johnson, Kent County Extension agent, University of Delaware, Agriculture and Commerical Horticulture
Disease Hotline Issue 4
Close-up of apple scab. Photo by Bob Mulrooney, Extension Plant Pathologist, University of Delaware.
What’s Hot HL 4
Gypsy moth larvae. Early instars shortly after hatching from egg mass.
Gypsy moth larvae starting to hatch from egg masses.
Gypsy moth egg masses. Gypsy moth photos are provided by Pennsylvania Department of Conservation and Natural Resources – Forestry Archive, , Bugwood.org.
European pine sawfly infestation. Photo by John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org.
European pine sawfly eggs. Photo by A. Steven Munson, USDA Forest Service, Bugwood.org.
Boxwood psyllid nymph. Photo by Nancy Gregory, Plant Diagnostician, University of Delaware 2007.
Cupped leaf with “lerps” caused by boxwood psyllid feeding. Photo by Brian Kunkel, Ornamentals IPM Specialist, University of Delaware 2008.
Number of lace bug nymphs clustered close together. Photo by Brian Kunkel, Ornamentals IPM Specialist, University of Delaware 2007.
Azalea lace bug nymph. Photo By Tracey Wooten, Horticulture Extension Agent – Sussex County, University of Delaware.