Thursday, August 30, 2007

Ornamentals Hotline Additional Pictures for the What's Hot Section of Issue 23, August 31, 2007




Scoliid Wasps Searching and Feeding
Photos by Brian Kunkel, Extension Ornamental IPM Specialist, University of Delaware

Ornamentals Hotline Additional Disease Pictures for Issue 23, August 31, 2007





Foliar Nematodes on Ferns and Hostas
Photos by Bob Mulrooney, Extension Plant Pathologist, University of Delaware

Wednesday, August 29, 2007

Ornamental Hotline Pictures for the What's Hot Section of Issue 23, August 31, 2007

Aschocyta Blight on Lily-of-the-Valley
Photo by Bob Mulrooney, University of Delaware, Extension Plant Pathologist
Anthracnose on Walnut
Photo From an Online Guide to Plant Disease Control, Oregon State University Extension

Scoliid wasps are usually considered beneficial insects because they help control green June beetle and other grubs.

Photo from the University of Minnesota

Ornamental Hotline Disease Pictures for Issue 23, August 31, 2007

Botrytis Stem Canker


Botrytis on Geranium (Pelargonium)
Above 2 Photos from New England Greenhouse Update

Foliar Nematodes Magnified
Photo by Jody Fetzer, New York Botanical Garden, Bugwood.org
Foliar Nematode Damage to Mums
Photo by Jody Fetzer, New York Botanical Garden, Bugwood.org
Foliar Nematode on Anemone
Photo by Jody Fetzer, New York Botanical Garden, Bugwood.org

Foliar Nematode on Butterfly Bush
Photo by Jody Fetzer, New York Botanical Garden, Bugwood.org

Ornamentals Hotline Insect Pictures for Issue 23, August 31, 2007

Japanese Beetle Grubs
Photo by John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org
Asiatic Garden Beetle Grubs
Photo Credit John Obermeyer, Purdue Cooperative Extension Service
Phyllophaga species include May beetles, June beetles, and scarab beetles. These grubs have a multi-year life cycle.
Photo from Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org


Third instar oriental beetle with Tiphia vernalis (parasite) egg on ventral side
Photo by Mike Reding & Betsy Anderson, USDA ARS, Bugwood.org


Green June Beetle Grub
Photo from Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org


Northern Masked Chafer Grub
Photo by Mike Reding & Betsy Anderson, USDA ARS, Bugwood.org

Tuesday, August 28, 2007

Ornmentals Hotline Weed Pictures for Issue 23, August 31, 2007

Japanese Stiltgrass Close Up

Japanese Stiltgrass Competing with Planted Ferns


Stand of Japanese Stiltgrass in Wooded Clearing


Japanese Stiltgrass Mowed Area Showing Regrowth


Japanese Stiltgrass Mowing Effects
All Pictures by Susan Barton, University of Delaware, Extension Ornamentals Specialist

Wednesday, August 22, 2007

Ornamentals Hotline Disease Pictures for Issue 22, August 24, 2007

Mushrooms growing on Mulch
Photo from University of Cincinatti, Clermont College, Biology


Slime mold on mulch
Photo from University of Tennesee Plant Pathology

Slime mold on mulch
Photo by Peggy Sellers, Purdue University
Birds nest fungus
Photo from Department of Plant Pathology, Washington State University

Stinkhorn mushroom Clathrus spp
Photo by Paul A. Mistretta, USDA Forest Service, Bugwood.org

Dog stinkhorn fungus Mutinus caninus
Photo by Chris Evans, River to River CWMA, Bugwood.org
Stinkhorn mushroom Linderia columnata
Photo by David J. Moorhead, University of Georgia, Bugwood.org


Septoria Leaf Spot on Cornus florida
Photo from Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

Septoria Leaf Spot on Cornus
Photo from Online Guide to Plant Disease Control, Oregon State University

Ornamental Hotline Insect Pictures for Issue 22, August 24, 2007

Baldcypress (Taxodium) Rust Mite Damage - Whole Tree View


Baldcypress Rust Mite Damage - Branch View

Baldcypress Rust Mite Damage - Needle View

Baldcypress Rust Mite Magnified

All photos by Dr. Casey Sclar, Plant Health Care Division Leader, Longwood Gardens

Tuesday, August 21, 2007

Ornamental Hotline Additional Weed Pictures for Issue 22, August 24, 2007

Wild Radish

Hairy Bittercress

Corn Speedwell

Persian Speedwell

Purslane Speedwell

Ivyleaf Speedwell

Field Violet or Field Pansy

Yellow Rocket

Annual Ryegrass

Mousear chickweed


All Photos Courtesy of Shawn Askew, Turfgrass Weed Science, Virginia Polytechnic Institute & State University. www.ppws.vt.edu/~saskew/turfweeds/ or www.turfweeds.net