Born in Rochester, N.Y., Canfield opted to attend an acting school rather than a traditional college and got her start on Broadway. She later moved to Los Angeles to pursue a screen career.
Besides Green Acres, Canfield's other TV credits include Bewitched, The Love Boat and General Hospital. In 1963, she appeared on The Andy Griffith Show, going on a blind date with Gomer Pyle (Jim Nabors). She also had small film roles in Pollyanna and Something Wicked This Way Comes.
In the mid-1980s, Canfield moved to Sedgwick, Maine and lived there until 2011 when she returned to California.
Canfield is survived by her husband, John Bischof; two daughters and three grandsons, according to the Times.