Greenhouse Update - December 6, 2006
Leanne Pundt, Extension Educator, University of Connecticut
Hosta Virus X
Dr. Sharon Douglas (from the Connecticut Agricultural Experiment Station) was recently notified of a new state record for Hosta Virus X (HVX) in New London County, Connecticut. The first positive detection, by Agdia, Inc. was on 4 August 2005. The six hosta cultivars that tested positive were Francee, Ginko Craig, Hyacinthina, Minuteman, Patriot, and Wide Brim. The new state record has been submitted to the NAPIS database.
Hosta Virus X is a potexvirus. HVX-infected hostas may exhibit mottling or leaf distortion, or plants may be infected with the virus but not show any symptoms for weeks, months, or years. An ELISA serological test is the only way to confirm that a plant has HVX, as there are several hosta viruses.
There is no cure for this
virus once plants are infected, and those plants should be
destroyed. Following good sanitation practices and buying quality,
disease-free plants are critical to preventing Hosta Virus X in
nurseries or home gardens.
'Sum and Substance' with the first signs of HVX infection.
'Gold Edger' in sun. HVX symptom areas burn more easily.
Additional information can be found on the following websites:
Massachusetts Pest Alert
for Hosta Virus X
Hosta Library website
Michigan State University
Landscape Alert, May 13, 2005
Reported by Donna
Ellis,Extension Educator and State Survey Coordinator
USDA APHIS Cooperative Agricultural Pest Survey (CAPS) Program
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