Wednesday, July 25, 2007

Ornamentals Hotline Insect Pictures for Issue 18, July 27, 2007


Honeylocust pod gall midge
Photo by Whitney Cranshaw, forestryimages.org
Honeylocust pod gall midge damage
Photo by E. Bradford Walker, forestryimages.org

Honeylocust Pod Gall Midge Damage
Photo by Whitney Cranshaw, forestryimages.org

Honeylocust Pod Gall Midge Damage
Photo by Michael Masiuk, woodypests.cas.psu.edu/FactSheets/InsectFactSheets/html/Honey_Pod_Gall_Midge.html

Mimosa Webworm on Honeylocust
From Kansas Insect Newsletter, July 14, 2006, KSU Entomology Extension


Honeylocust Spider Mite
Photo by Whitney Cranshaw, forestryimages.org

Honeylocust Plant Bug
From woodypests.cas.psu.edu/FactSheets/InsectFactSheets/html/Honeylocust.html

Honeylocust Leafhopper
Photo by Whitney Cranshaw, forestryimages.org

Ornamentals Hotline Disease Pictures for Issue 18, July 27, 2007


Nectria Canker on Honeylocust
Photo: Robert Blanchette, University of Minnesota Extension
Diplodia Tip Blight on Pine
Photo by Minnesota Department of Natural Resources Archives
forestryimages.org

Diplodia Tip Blight on Pine
Photo by Susan K. Hagle, forestryimages.org

Tuesday, July 24, 2007

Ornamentals Hotline Weed Pictures for Issue 18, July 27, 2007

Bermudagrass control experiment with glyphosate and Basamid

Nimblewill control experiment with glyphosate and Basamid

Nimblewill control in fall with glyphosate (Roundup) and Basamid

Basamid application uniformity is key when not tarped.

All slides from a presentation by Shawn Askew, Extension Turfgrass Weed Scientist, Virginia Tech.

Friday, July 20, 2007

Ornamentals Hotline Additional Disease Pictures for Issue 17, July 20, 2007

Peony Blotch on Tree Peony Leaves


Marginal Leaf Scorch Due to Water Stress on Katsura Tree

Photos by Bob Mulrooney, Extension Plant Pathologist, University of Delaware, Cooperative Extension

Thursday, July 19, 2007

Ornamentals Hotline Disease Pictures for Issue 17, July 20, 2007

Photo from Iowa State University Forestry Extension Website.



Bacterial Leaf Scorch on Pin Oak

Photo by Jim Peter, The Plant & Pest Diagnostic Laboratory at Purdue University

Bacterial Scorch on Pin Oak
Photo by Jim Peter, The Plant & Pest Diagnostic Laboratory at Purdue University


Bacterial Leaf Scorch on Oak
Photographer Edward L. Barnard, Florida Department of Agriculture and Consumer Services

Peony blotch on peony (Paeonia)
Image from Missouri Botanical Garden, Kemper Center for Home Horticulture Web Site

Ornamentals Hotline Insect Pictures for Issue 17, July 20, 2007

Azalea Lacebug
Clemson University - USDA Cooperative Extension Slide Series, www.insectimages.org


Lacebug Feeding on Leaf
Photo by B.A. Kunkel, Extension IPM Specialist, Univ. Delaware


Lacebug Closeup
Photo by B.A. Kunkel, Extension IPM Specialist, Univ. Delaware

Wednesday, July 18, 2007

Ornamentals Hotline Weed Pictures for Issue 17, July 20, 2007

Yellow Nutsedge Plants


Yellow Nutsedge in Turf Near Drain Outlet


Yellow Nutsedge Growing Through Mulch


Yellow Nutsedge Rhizomes


Glyphosate Spot Sprayed on Yellow Nutsedge: Multiple Applications Will Be Needed


Newly Forming Tubers at the End of Rhizomes on Yellow Nutsedge (magnified 8x)


Mature Tuber From Yellow Nutsedge (magnified 8x)


Triangular Stem of Yellow Nutsedge (Magnified 8x)
All Yellow Nutsedge Pictures by Gordon Johnson, Extension Agriculture and Commercial Horticulture Agent, University of Delaware, Kent County

Friday, July 13, 2007

Ornamentals Hotline Insect Pictures for Issue 16, July 13, 2007

Mimosa Webworm: Webbing on Leaves
Photo by John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org

Ornamentals Hotline Disease Pictures For Issue 16, July 13, 2007

Bacterial Leaf Spot of Zinnia


Aster Yellows on Rudbeckia



Aster Yellows on Coneflower



Brown Patch on Tall Fescue Leaves

All Disease Pictures by Bob Mulrooney, University of Delaware, Extension Plant Pathologist

Ornamentals Hotline Weed Pictures For Issue 16, July 13, 2007

Bermudagrass (wiregrass) Stolon


Bermudagrass (wiregrass) Infesting Cool Season Turfgrass


Bermudagrass (wiregrass) Infesting Liriope Bed


Bermudagrass (wiregrass) Hair-like Ligule, not Membranous


Bermudagrass (wiregrass) seed head
All Bermudagrass Pictures Taken By Gordon Johnson, Extension Agriculture and Horticulture Agent, University of Delaware, Kent County.