Description & Treatment Apple Scab is a fungal disease which can affect the leaves, fruit, and twigs of flowering, ornamental trees such as crabapple, hawthorn (Venturia inequalis) and pear (V. pirina). Infection on newly emerging leaves is favored by wet and cool spring conditions. Early symptoms of Apple Scab are brownish-green spots on the leaves […]
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Anthracnose – Description & Treatment Anthracnose (Leaf Blight) is a general term for foliar diseases caused by numerous species of fungi and affects a broad range of trees including ash, dogwood, maple, beech, birch, elm, linden, oak, sycamore and willow. Visible symptoms of the disease vary with species and host but most commonly, infected leaves […]
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Spotted lanternfly is here and continuing to spread across the states. If it continues, the impact could be devastating. Recently, Don Grosman, Arborjet Entomologist, attended two spotted lanternfly (SLF) summits. The first was the “Spotted Lanternfly Green Industry Summit,” hosted by Bartlett Tree Experts at their Research Lab in Charlotte, NC on February 27-28. Over 50 […]
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Fireblight spreads quickly between trees in close proximity. Pollinators, rain and wind can spread the disease. Description & Treatment Fireblight is a bacterial disease affecting apple, pear, crabapple, hawthorn, and quince. It spreads quickly between trees in close proximity. Pollinators, rain and wind can spread the disease. The pathogen (Erwinia amylovora) can spread through the […]
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According to the U.S. Department of Agriculture this invasive pest “could be the most destructive species in 150 years.” Spotted Lanternfly is an invasive pest, originally from Asia that is currently and rapidly spreading across the country. Native to Asia, the brightly colored planthopper was first discovered in Pennsylvania in 2014.Established populations are now found in […]
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