The disease is spread when sap from infected plants is mechanically transferred from one plant to another on hands and pruning tools. HVX is also spread when dividing plants. There is no evidence that insects spread the virus and it is not seed borne.
Incidence of disease has been observed in some hosta varieties more often than others. Some of the more frequently infected varieties are: Sum and Substance, Gold Standard, Golden Tiara, and Striptease. Some hosta's with mottled leaves from infection with HVX were given variety names before they were identified as being diseased. All plants of these varieties are infected with HVX and should be destroyed: Breakdance, Eternal Father, Kiwi Watercolors, Leopard Frog, Lunacy and Parkish Gold.
It is not possible to cure plants of viruses. Care should be taken to prevent the introduction of HVX into the garden or nursery. Do not buy, sell, or grow any of the varieties that are 100% infected. Carefully inspect plants before buying or upon arrival at the nursery. Look for strangely spotted or mottled leaves. When handling plant material disinfect hands and tools between plants. If symptoms are observed destroy affected plants by burning, or sending to the landfill. HVX does not survive long in the soil. Once the roots of the infected plants have decomposed you can replant a virus free hosta in the same spot.
If you suspect you have hosta virus x in your nursery or garden center and would like more information please contact Ann Gibbs at 287-3891 or ann.gibbs@maine.gov
Websites with more information:
The American Hosta Society
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