After you have carefully considered and selected the best rootstock and grape variety to plant in 2021, now is the time to connect with a nursery and place an order.
Make sure you call and talk with the nursery of your choice.
Dr. Stephanie Bolton of the Lodi Wingrape Commission reminds us that there is no such thing as certified virus-free planting material. Dr. Bolton continues that growers should insist on CDFA (California Department of Food and Agriculture) certified rootstock and scion material (preferably the 2010 protocol) and obtain virus testing by the nursery or yourself.
Below are resources to refer to when ordering grapevines, they are listed in Dr Bolton's recently released book; What Every Winegrower Should Know: Viruses, Lodi Winegrape Commission 2020, Lodi California.
1. Useful overview article of considerations when ordering grapevines, by Drs. Jim Wolpert and Andy Walker. https://grapes.extension.org/ordering-grapevine-cuttings-and-plants-from-nurseries/
2. How to choose a rootstock by Stan Grant: Stan Grant on Rootstock selection
3. Ordering grapevines by Dr. James Stamp: https://www.winebusiness.com/wbm/?go=getArticle&dataId=191691
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