Vine Growth In the southwest, Concord, Niagara, Geisenheim 318, and Seyval blanc are now blooming. Other hybrid wine grapes are close to bloom. Many vinifera are a week or more away, especially with the cooler week coming up. In northern Michigan, clusters are beginning to expand on most vinifera cultivars. Shoot length is either in the 4-8 inch range for …
Steven Easterby: Great article. One thing I saw that is a bit off for California is the comment t...