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Boxwood Blight

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Boxwood Blight
Boxwood blight, early leaf symptoms - Photo by David Clement; University of Maryland
Scientific Name: 
Calonectria pseudonaviculata (Crous, J.Z. Groenew. & C.F. Hill) L. Lombard, M.J. Wingf. & Crous. (Lombard et al. 2010)
Cylindrocladium pseudonaviculatum Crous, J.Z. Groenew. & C.F. Hill, 2002, Cylindrocladium buxicola Henricot 2002
Common Name: 
Boxwood blight, box blight, Buxus blight
Native To: 
First discovered in the United Kingdom (LeBlanc et al. 2018)
Date of U.S. Introduction: 
Means of Introduction: 
Unknown (LaMondia 2014)
Fungal disease of boxwood plants (Buxus spp.) (LeBlanc et al. 2018)


University of Georgia. Center for Invasive Species and Ecosystem Health.


Google. YouTube; Virginia Cooperative Extension Master Gardener.

Selected Resources

The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Boxwood Blight.

Council or Task Force

Virginia Tech; Virginia State University. Virginia Cooperative Extension.

The Virginia Boxwood Blight Task Force provides leadership in safeguarding and protecting the ornamental horticulture industry, historical gardens, and landscape plantings from boxwood blight.

Federal Government
USDA. National Institute of Food and Agriculture.
USDAARS. Systematic Mycology and Microbiology Laboratory.
State and Local Government

Kansas Department of Agriculture.

See also: Plant Disease Watch List for more resources

Wisconsin Department of Agriculture, Trade, and Consumer Protection.

Pennsylvania Department of Agriculture.
Connecticut Agricultural Experiment Station. Plant Disease Information Office.

Minnesota Department of Agriculture.


University of Tennessee. Institute of Agriculture.

Purdue University. Plant and Pest Diagnostic Laboratory.

See also: Extension publications for more resources
University of Kentucky. Cooperative Extension Service.
See also: Plant Pathology Extension Publications for more resources
Oregon State University. Extension Service.
This concise publication gives useful information for homeowners, master gardeners, and professional landscapers about the boxwood blight disease: its symptoms, sanitation measures when it is discovered on a property, and preventive measures.
University of Georgia. Cooperative Extension.

University of Arkansas. Cooperative Extension Service.

See also: Extension Publications for more resources
Pennsylvania State University. Cooperative Extension.

Clemson University. Regulatory Services.