What’s Hot HL 23

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

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

Weed Hotline Issue 23

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

Insect Hotline Issue 23

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

Disease Hotline Issue 23

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

Foliar Nematodes on Ferns and Hostas

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