Washington’s Olympic Peninsula is on the edge of being able to successfully ripen many traditional wine grape varieties. And when you combine a marginal heat unit region with unusually cool springs and summers, like the growing seasons of 2010 and 2011, the uncertainty of harvest can test even the most determined of growers. Dr. Tom Miller, retired veterinarian, researcher, horticulturist and owner of Dungeness Bay Vineyard in Sequim, Washington, has devised a way to envelop his vines in warmth to give them an extra month of growing time and hasten maturity. After experimenting for several years with wrapping his vines […]