Friday, June 26, 2009

What's Hot HL Issue 13


Adult oriental beetle. Photo provided by: Mike Reding & Betsy Anderson, USDA Agricultural Research Service, Bugwood.org

Weed Hotline Issue 13


Japanese honeysuckle along side a road. Photo provided by: John M. Randall, The Nature Conservancy, Bugwood.org

Flowers of Japanese honeysuckle. Photo provided by: John M. Randall, The Nature Conservancy, Bugwood.org

Japanese honeysuckle infestation in woods near trail. Photo provided by: Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org

Disease Hotline Issue 13


Fairy rings. Photo provided by: Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org

Fairy rings (symptoms) on golf course fairway. Photo provided by: William M. Brown Jr., Bugwood.org

Downy mildew on rose leaves. Photo by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

Downy mildew on rose. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

A new text, "Diseases of Herbaceous Perennials", has been released by APS Press and is an excellent resource.

Insect Hotline Issue 13


Japanese beetle adult. Photo provided by: David Cappaert, Michigan State University, Bugwood.org

Friday, June 19, 2009

What's Hot HL Issue 12


Dogwood borer male. Photo provided by: James Solomon, USDA Forest Service, Bugwood.org

Dogwood borer female. Photo provided by: James Solomon, USDA Forest Service, Bugwood.org

Redheaded flea beetle damage on forsythia. Photo by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Redheaded flea beetle adult. Photo by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

White prunicola scale adult males on holly. Photo by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Fourlined plant bug feeding damage. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org

Fourlined plant bug adult. Photo provided by: Johnny N. Dell, Bugwood.org

Disease Hotline Issue 12


Powdery mildew on crabapple and apple. Photo provided by: University of Georgia Plant Pathology Archive, University of Georgia, Bugwood.org

Oak leaf blister. Photo found at: http://www.ppdl.purdue.edu/PPDL/images/TaphrinaOak1.jpg

Cedar quince rust on a juniper twig. Photo found at: http://www.uky.edu/Ag/kpn/kpn_09/pn_090414.html

Insect Hotline Issue 12


Cottony maple scale with egg masses. Photo provided by: Eugene E. Nelson, Bugwood.org

Cottony maple leaf scale adults with egg masses. Photo found at: http://www.ces.ncsu.edu/depts/ent/notes/O&T/trees/note37/cotma1.jpg

Cottony camellia/taxus scale and egg masses. Photo provided by: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org

Friday, June 12, 2009

Weed Hotline Issue 11


Yellow nutsedge. Photo provided by: Steve Dewey, Utah State University, Bugwood.org

Crabgrass. Photo provided by: Joseph LaForest, University of Georgia, Bugwood.org

Disease Hotline Issue 11


Frog-eye leaf spot on red maple. Photo by: Joseph O'Brien, USDA Forest Service, Bugwood.org

Bacteria blight on lilac. Twigs turn black and wilt from the tips back to the stem. (provided by Karen L. Snover-Clift, Cornell University) Photo found at: http://plantclinic.cornell.edu/FactSheets/LilacBactBlight/lilacbactblight.htm

Bacteria blight on lilac. Leaves often show damage around the margins and/or along the central vein. (provided by Karen L. Snover-Clift, Cornell University). Photo found at: http://plantclinic.cornell.edu/FactSheets/LilacBactBlight/lilacbactblight.htm

Insect Hotline Issue 11


Bagworm hanging from host terminal branch.

Bagworm larva in opened bag.

Adult male bagworm. All photos provided by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org

Friday, June 5, 2009

What's Hot HL Issue 10


Azalea bark scales. Photo provided by: United States National Collection of Scale Insects Photographs Archive, USDA Agricultural Research Service, Bugwood.org

Emerald ash borer adult (nickel in picture for size comparison), serpentine mines packed with frass. Photo provided by: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org

Exobasidium gall on azalea. Photo found at: http://hyg.ipm.illinois.edu/article.php?id=64

Lecanium scales. Photo provided by: James Solomon, USDA Forest Service, Bugwood.org

Weed Hotline Issue 10


White clover. Photo provided by: Chris Evans, River to River CWMA, Bugwood.org

Disease Hotline Issue 10


Figure 1: An artillery fungus spore packet within the cup. (provided by the Plant Disease Diagnostic Clinic, Cornell University.)

Figure 2: Artillery fungus spore packets stuck on the vinyl siding of a house. (provided by the Plant Disease Diagnostic Clinic, Cornell University.)

Both images were found at the following website: http://plantclinic.cornell.edu/FactSheets/artfungus/artilleryfungus.htm

Insect Hotline Issue 10


Diagram of Gladiolus thrips and damage. Photo provided by: Art Cushman, USDA; Property of the Smithsonian Institution, Department of Entomology, Bugwood.org

Western Flower thrips and damage. Photo provided by: David Cappaert, Michigan State University, Bugwood.org

Western flower thrips adult and immature. Photo provided by: Jack T. Reed, Mississippi State University, Bugwood.org

Privet thrips damage on privet. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org