Flowers Vineyard & Winery was established in 1989 when Walt and Joan Flowers purchased land on the Sonoma Coast. The Flowers had owned a nursery in Pennsylvania but wanted to combine their love of agriculture with their interest in winemaking.

Promise was founded in 2004 by Jennifer and Steve McPherson. Robert M. Parker Jr. has rated Promise Cabs in the mid-90s, and called one vintage "Absolutely spectacular…It looks to me like a classic from Napa Valley."

The namesake 12th century tower stands in the courtyard. The Kressman family has been managing the estate for four generations, and designed the labels in the 1930s.