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Plant Disease Alerts

Disease Alerts will now be posted through the Virginia Ag Pest and Crop Advisory website. Visit the website to subscribe to pest/disease alerts and view archived alerts.

2016 Alerts

August 30: Update on the Boxwood Blight Situation in Virginia (PDF | 43KB)

2013 Pest Alerts

November 21: Boxwood Holiday Greenery at Historic Sites (PDF | 202KB)

November 11: Update on the Boxwood Blight Situation in Virginia (PDF | 275KB)

September 24:  An update on boxwood blight in Virginia and new find in a Chesterfield county landscape. (PDF | 249KB)

February 14: 2012‐2013 Strawberry Virus Issue (PDF | 5KB) , Dr. Chuck Johnson, Extension Plant Pathologist, Virginia Tech Southern Piedmont Agricultural and Extension Research Center. This disease alert outlines the current situation regarding Strawberry Mild Yellow Edge Virus (SMYEV) and Strawberry Mottle Virus (SMoV). The presence of these viruses in strawberry has become a concern for strawberry producers in Virginia and other states due to widespread symptoms reported in newly planted strawberries in 2012.

2012 Pest Alerts

July 24: Virginia expands Thousand Cankers Disease Quarantine to include the counties of Fairfax and Prince William and the cities of Fairfax, Falls Church, Manassas and Manassas Park. For more information on Thousand Cankers Diseases in the Eastern United States, visit the US Forest Service National Forest Health Monitoring Service and our original alert on the disease: Walnut Thousand Cankers Disease Alert (PDF | 5KB)

June 26: Impatiens Downy Mildew confirmed in Fairfax, Virginia. Refer to the disease alert for more information: Impatiens Downy Mildew Alert (PDF | 34KB)

May 2: Researchers at the Connecticut Agricultural Experiment Station have identified a new host of the Boxwood Blight pathogen (Cylindrocladium pseudonaviculatum): Pachysandra. Refer to their website at for more information.


Plant Disease Clinic
Department of Plant Pathology, Physiology, and Weed Sciences
106 Price Hall
170 Drillfield Drive, Virginia Tech
Blacksburg, VA 24061-0331

Phone: 540-231-6758
Fax: 540-231-7477

Current Disease Update

Artillery Fungus

    Established English boxwood plants with boxwood blight.

The artillery fungus is common in home and urban landscapes where it decays organic debris and is most commonly associated with wood mulch.


Boxwood Blight Task Force

    Photo of Boxwood Blight

The Virginia Boxwood Blight Task Force was established to provide leadership in safeguarding and protecting the ornamental horticulture industry, historical gardens and landscape plantings from boxwood blight. For more information, click here.

Plant Disease Instructional Modules