Have you or your beloved Christmas Tree been affected by Dothistroma?

Image of Dothistroma needle blight on many needles

Written by Christina Lanzoni – TPDDL Student Worker; Edited by Hannah Ayala – Extension Assistant ‘Twas the day before Christmas and all through the night Spores were dispersing causing Dothistroma needle blight It’s that time of year again where everyone is out buying Christmas trees to decorate their homes. Without proper care, those trees would not be available for us to put gifts under. One of the most common foliar diseases seen in pine trees is Dothistroma needle blight. It affects the needles of over 30 different species… Read More →

I’m a Leaf Baller, Insect Galler!

Cynipid Wasp galls

Written by Megan Turner – TPDDL Student Worker; Edited by Hannah Ayala – Extension Assistant Have you noticed strange bumps or swelling on your tree leaves? There could be something living in there! More than 2000 species of insects in the United States create these bumps, properly termed galls, to protect their young while they are developing. While most commonly caused by tiny wasps, they can also be caused by other insects, mites, nematodes, bacteria, and fungi. Eighty percent of galls reported in the US are found on… Read More →

Ento-MOUSE-sporium

Entomosporium Leaf Spot on an Indian Hawthorn leaf

Written by Kendall Grier – TPDDL Student Worker; Edited by Hannah Ayala – Extension Assistant Disease is everywhere! As plant diagnosticians, we are constantly reminded of this everywhere we go. One of these reminders is daily as we walk into the lab for work. When you walk into the Centeq building (the building where the Texas Plant Disease Diagnostic Lab is located) you are greeted by some spotted Indian Hawthorns. At first glance they look very pretty, almost as if the color change is caused by the changing… Read More →

Does your BadonkaCONK cause Butt Rot?

Ganoderma fruiting body

Written by Javier Garza – TPDDL Student Worker; Edited by Hannah Ayala – Extension Assistant Ganoderma rot is caused by the genus of fungi Ganoderma, a basidiomycete which has several species that cause the disease (G. zonatum, G. applanatum, G. lucidum). Ganoderma spp. have a wide range of hosts and can attack gymnosperms, woody dicots, and even some palms. However, oaks, maples, and honeylocusts are particularly susceptible to this disease. The symptoms of Ganoderma spp. may include yellowing, stunted growth, wilting, dead branches, or a high proportion of… Read More →

Rapid Decline of Oaks

Ms. Sheila McBride (TPDDL diagnostician) and Dr. David Appel, Extension Plant Pathologist with the Texas A&M AgriLife Extension Service contributed this article to address the numerous inquires that has been received this year regarding declining oak trees -KO This year, beginning in the early spring to late summer, there has been many inquiries as to why the post oaks have “suddenly” died. The most frequent symptoms have been described as a rapid appearance of chlorotic (yellow) and/or necrotic (brown and dead) leaves throughout the entire crown. The leaves often… Read More →