Cultural Hotline Issue 2

Rainfall has been heavy this spring.  As mentioned in the article white pine weevil and European pine sawfly due well with high amounts of precipitation.  Photos for these insects have been posted previously.  Please use the search function to find  these.

Compacted soils with standing water after a heavy rainfall event.  Photo provided by Brian A. Kunkel, University of Delaware Ornamentals Extension specialist.

Cultural Hotline Issue 1

Winter damage took its toll on landscape plants this winter.  Damage on a black oak is on the left.  Photo provided by Randy Cyr, Greentree, Bugwood.org.

 

 

 

 

 

Frost damage to the trunk of a pear tree.  Photo provided by William Jacobi, Colorado State University, Bugwood.org

 

 

 

Brown needles on the south side of the pine tree.  Photo provided by USDA Forest Service – North Central Research Station Archive, USDA Forest Service, Bugwood.org

Disease Hotline Issue 22

Recent weeks have been dry.  Anthracnose is increasing on various shade trees as dry weather ages leaves…  Pictures of anthracnose on shade trees have been posted previously.  Please search archive (tags) for relevant pictures.

Culture Hotline Issue 7


Tree mulched in the ‘mulch volcano’ style which is improper mulching. Photo provided by: Robert Benjamin, Bugwood.org

Tree improperly mulched. Photo provided by: Joseph LaForest, University of Georgia, Bugwood.org

What’s Hot HL Issue 2


Pitch on branches sign of white pine weevil feeding and oviposition. Photo provided by: E. Bradford Walker, Vermont Department of Forests, Parks and Recreation, Bugwood.org

Mating pair of white pine weevil. Photo provided by: Daniel Herms, The Ohio State University, Bugwood.org

Water logged soils. Photo provided by: Brian Kunkel, Ornamental IPM Extension Specialist, University of Delaware.

Disease Hotline Issue 26


Symptoms of girdling roots on tree. Photo provided by: Roland J. Stipes, Virginia Polytechnic Institute and State University, Bugwood.org

Girdling roots. Photo provided by: Joseph O’Brien, USDA Forest Service, Bugwood.org

Symptoms of Ganoderma root rot. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

Fruiting bodies of Ganoderma root rot. Photo provided by: Minnesota Department of Natural Resources Archive, Minnesota Department of Natural Resources, Bugwood.org

Fruiting bodies of Ganoderma root rot. Photo provided by: USDA Forest Service – Region 8 Archive, USDA Forest Service, Bugwood.org