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Pin Oak
Pin Oak
Bacterial Leaf Scorch
Pin oaks are often used in landscapes as they grow into large, well-shaped trees that grow relatively fast. They are susceptible to a bacterial disease called bacterial leaf scorch that causes a brown, “scorched” appearance on the leaves and typically results in some premature leaf drop in latter summer. Over time, individual limbs will die, and the canopy will gradually thin over time. Unless caught early and treatments are started by injecting with an antibiotic, there isn’t a successful treatment for the disease and the affected trees will have a shortened life span.
Oak sawfly
Pin oaks (and other oak species) are often targeted by oak sawfly larvae (caterpillars) in the latter part of the summer. The caterpillars can eat a noticeable amount of foliage, but except in extreme cases, they don’t cause significant damage that warrants treatment with an insecticide.
Suggested Substitutes
Suggested Substitutes
Keep in mind that it is always a good idea to plant a diversity of material so that a new insect or disease arriving on the scene will not decimate your landscape!!
Instead of planting a plant that is commonly riddled with insect pest and diseases, find one from our list of suggested substitutes from UT Extension Specialists, found here.
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