We recently had a grower meeting covering the release of five new grape varieties that are resistant to Pierce's Disease
https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=53564
PD is a very debilitating disease of European wine grapes, like "dead vines" debilitating.
https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=39023
https://www2.ipm.ucanr.edu/agriculture/grape/pierces-disease/
https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=53595
So where do you get these vines?
Andrew Walker writes, "At this point, 4 nurseries carry my new PD resistant wine grape varieties: Novavine (Santa Rosa), Wonderful (Wasco), Sunridge (Bakersfield) and Double A nursery in New York. These nurseries are still gearing up for large orders but will also service hobbyist orders. As the varieties become better know and used they will be more widely distributed and available. I'd start by checking with those nurseries. They usually have a minimum order and Double A might be the most accommodating of hobbyist orders."