There are currently more than 1,200 vineyards and wineries in the state of California. These vineyards produce 63 different varieties of grapes and wines.
40,000
There is no standard collective noun form the noun 'vineyards', in which case a noun suitable for the situation is used, for example an itinerary of vineyards, a cooperative of vineyards, a collection of vineyards, etc.
If it means one weaver's vineyards then it would be Weaver's Vineyards, but if it was multiple weavers then it would be Weavers' Vineyards. Or if it was just Weavers as a name, it would be Weavers Vineyards.
80 wineries
There are a number of great wineries in Napa. They include Domaine Carneros, Artesa Vineyards & Winery, Silverado Vineyards, and many more.
Markham Vineyards was created in 1978.
Hanzell Vineyards was created in 1948.
Almaden Vineyards was created in 1852.
Schramsberg Vineyards was created in 1965.
Alban Vineyards was created in 1889.
J Vineyards was created in 1986.