An example of a field-grafted vine. Reasons to redevelop a vineyard vary—the vines may be the wrong variety, riddled with disease, or no longer productive. But when it’s time for a change, do you graft or replant? Many of the juice grape vineyards in Washington State were planted in the 1960s; older wine grape plantings are nearing 50 years old. Washington’s Concord industry is an aging industry, and the wine grape industry is heading that way, too, said Mike Concienne, area manager of National Grape Cooperative Association (Welch’s). “For a lot of vineyards, the question is, are they productive and […]