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Invasive Species Resources

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Pennsylvania State University. Cooperative Extension.
Cornell Laboratory of Ornithology.
Note: Nesting Behavior
Cornell University (New York). New York State Agricultural Experiment Station.
Cornell University. Cooperative Extension of Suffolk County. Horticulture Diagnostic Laboratory.
See also: Tree and Shrub Disease for more fact sheets.
Pennsylvania State University. Cooperative Extension.
Pennsylvania State University. Cooperative Extension.
Pennsylvania State University. Cooperative Extension.
Pennsylvania State University. Cooperative Extension.
Virginia Tech; Virginia State University. Virginia Cooperative Extension.
This Best Management Practice document is a set of guidelines for home growers of landscape boxwood to avoid introduction of the boxwood blight pathogen into a landscape or, if the disease is already present in a landscape, to manage the disease in the most effective manner and avoid spread of the disease to new locations. See also: Resources for Plant Diseases for more publications
Cornell University. Agriculture and Life Sciences.
This guide provides photographs and descriptions of biological control (or biocontrol) agents of insect, disease, and weed pests in North America. It is also a tutorial on the concept and practice of biological control and integrated pest management (IPM). Whether you are an educator, a commercial grower, a student, a researcher, a land manager, or an extension or regulatory agent, we hope you will find this information useful.
Cornell University Cooperative Extension. Department of Natural Resources.
See also: ForestConnect Fact Sheet Series for more factsheets.
Virginia Tech; Virginia State University. Virginia Cooperative Extension.
Boxwood blight (also called "box blight" in Europe), caused by the fungal pathogen Cylindrocladium pseudonaviculatum (=C. buxicola), was found for the first time in the United States in North Carolina, Virginia and Connecticut in 2011. The first reported infestation in the U.S. was in a North Carolina nursery and the disease was introduced to Virginia on plants from that nursery. Spread outside the two Virginia locations, both of which are fields owned by a single nursery, has not been reported. However, growers should be aware of the symptoms of boxwood blight and monitor nursery and landscape boxwoods for symptoms.
Pennsylvania State University. Cooperative Extension.
Pennsylvania State University. College of Agricultural Sciences. Entomology.
New Mexico State University.
Louisiana State University. AgCenter Research and Extension.
Citrus canker, a serious disease of citrus, was recently found on trees in East Baton Rouge and Livingston parishes, according to LSU AgCenter plant doctor Raj Singh. Citrus canker is a highly contagious bacterial disease that was first detected around 1914 in Louisiana and declared eradicated by 1940. The disease is known to cause defoliation, premature fruit drop, blemished fruit and tree decline. Severely infected trees ultimately may stop producing fruit. If you believe your citrus trees have citrus canker, contact the U.S. Department of Agriculture at 225-298-5410 or the LDAF Horticulture and Quarantine Division at 225-952-8100

Pennsylvania State University. School of Forest Resources.

Louisiana State University. AgCenter Research and Extension.
Publication 3269
See also: Plant Diagnostic Center - Publications for more resources
Louisiana State University. AgCenter Research and Extension.
See also: Plant Diagnostic Center - Publications for more resources