Inside Knights Bridge
Frost in the Vineyard
Knights Bridge Winery experiences frost in their Estate Vineyard. Lean more about the effects of frost on vineyards and view a recent video on the topic.
During every growing season, vineyard managers across California have to plan for frost occurrences in vineyards. This is especially true in cooler climate regions and mountainside vineyards, such as our estate vineyard here in Knights Valley. With elevataion rising from 300 to 900 ft on the rocky slopes of the Mayacamas mountain range north of Calistoga, Knights Bridge's estate vineyard is susceptible to frost during this time of year.
Even though the sight of frosted vines look stunningly beautiful, too much cold and frost exposure can be harmful to vine growth. Once bud break occurs, vineyard managers are "on call" to monitor the vines and make sure that frost does not harm the vines this early in the growing cycle. They use a number of tactics to help reduce frost damage. They turn on sprinklers to wet the vines, which allows an insulating jacket of ice to form, protecting the vines and grape clusters. But, the most common method is using large fans to move the air through the vines. This tactic basically pushes cool air out of the vines while pulling the warmer air from above into the vines.