Grapevine virus testing labs

Grapevine viruses can limit vineyard productivity through yield and/or fruit and wine quality. Growers are advised to test grapevines for viruses if vine health concerns arise and/or if they plan to use bud wood for propagation or grafting-over.

Below is a list of virus testing labs located on the West Coast. These labs are listed in alphabetical order and may not include all possible testing labs available currently. Inquire with the lab to obtain protocols for sampling protocols and shipping guidelines.

Want to learn more about this topic? Explore more resources from OSU Extension: Wine grapes, Plant diseases

Sampling dormant canes during pruning is an ideal time for virus testing. Many grapevine viruses are detected in the vascular layer under the bark of last year's shoots (canes).

Photo: Patty Skinkis

Mar 2022

Author

Dr. Patty Skinkis standing in OSU's research vineyard

Patricia A. Skinkis

Viticulture Extension Specialist

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