Fall Tree Care: Identifying Common Tree Insects in Fall, Part Three
This is the third of a four part series on fall tree insects. Introduction In fall, while preparing for winter dormancy, many plants shed their leaves in a burst of…
Fall Tree Care: Identifying Common Tree Insects in Fall, Part Two
Introduction In fall, while preparing for winter dormancy, many plants shed their leaves in a burst of color. During this period, certain tree insects can be easily identified. The following…
Tree Diseases: Bacterial Leaf Scorch (Xylella fastidiosa)
Introduction Bacterial leaf scorch is a disease of various shade trees, perennials, and crops that is caused by the bacteria Xylella fastidiosa. The bacteria invade the xylem of susceptible trees,…
Tree Diseases: Brown Rot Blossom Blight (Monilia fruiticola)
Introduction Brown rot blossom blight is a fungal disease that infects a bevy of stone fruit trees. The disease is caused by the pathogen Monilia fruiticola. Monilia fruitocola invades susceptible…
Tree Diseases: Bacterial Leaf Spot
Introduction Bacterial leaf spot is a disease that affects various crops and ornamental plants. It is most often caused by the bacterial pathogens Pseudomonas spp. and Xanthomonas spp. The infectious…
Tree Diseases: Seiridium Canker (Seridium)
Introduction Seiridium canker is a fungal disease caused by three species of fungi in the genus Seiridium. Of the three, Seiridium cardinale is the most widespread, affecting various members of…
Inspecting Plants for Damage After a Winter Storm
Introduction During the winter months, frigid temperatures and heavy winds can combine to produce fierce storms. Winter storms can feature abundant precipitation – often in the form of ice or…
Insect Profiles: Oak Leaf Gall Mite (Pyemotes herfsi)
Introduction Oak leaf gall mite (Pyemotes herfsi), also known as itch mite, is an ectoparasitic insect in the genus Pyemotes. It is a secondary invader of oak trees that parasitizes…
Tree Diseases: Hypoxylon Canker of Oaks (Hypoxylon atropunctatum)
Introduction Hypoxylon canker of oaks is a fungal disease caused by the pathogen, Hypoxylon atropunctatum. The fungus infects weakened, injured, and dying wood on oak trees. The fungus generally infects…
Insect Profiles: Spruce Spider Mite (Oligonychus ununguis)
Introduction Spruce spider mite (Oligonychus ununguis) is a small pest that infests numerous conifers. The insect is native to North America. It is one of the most destructive spider mites…
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