Weed Hotline Issue 17

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

Insect Hotline Issue 17

Azalea Lacebug and tarspots
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

Disease Hotline Issue 17

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

Weed Hotline Issue 16

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.

Disease Hotline Issue 16

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