Rainfall has been heavy this spring. As mentioned in the article white pine weevil and European pine sawfly due well with high amounts of precipitation. Photos for these insects have been posted previously. Please use the search function to find these.
Compacted soils with standing water after a heavy rainfall event. Photo provided by Brian A. Kunkel, University of Delaware Ornamentals Extension specialist.
European pine sawfly. Notice larvae feed gregariously and consume older needles first creating a ‘bottle-brush’ effect. Photo provided by: Petr Kapitola, State Phytosanitary Administration, Bugwood.org
European pine sawfly eggs. Photo provided by: Andrea Battisti, Università di Padova, Bugwood.org
Black spot on rose. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org
Cercospora leaf spot on rose. Photo found at: http://edis.ifas.ufl.edu/LyraEDISServlet?command=getImageDetailℑ_soid=FIGURE%201&document;_soid=PP267&document;_version=42330
Kabatina blight on juniper. Photo found at: http://urbanext.illinois.edu/hortanswers/detailproblem.cfm?PathogenID=20
Boxwood psyllid damage on boxwoods. Photo provided by: Daniel Herms, The Ohio State University, Bugwood.org
Boxwood leafminer adult. Photo provided by: Jim Baker, North Carolina State University, Bugwood.org
Swiss needle cast on leaves. Photo provided by: USDA Forest Service – North Central Research Station Archive, USDA Forest Service, Bugwood.org
Fruiting bodies of Swiss needle cast. Photo provided by: USDA Forest Service Archive, USDA Forest Service, Bugwood.org
Rhabdocline needle cast. Photo found at: http://www.plantpath.cornell.edu/trees/photo3/rhabph77b.JPEG