I have a history of "overdue" babies--three of my five labors were induced. This pregnancy I am being proactive. My midwives and my doula both suggested trying Evening Primrose. It doesn't start labor but assists in softening the cervix in preparation for labor.
In addition to labor, Evening Primrose has an array of uses for women's reproductive health issues. Natural Family Today states that, "Evening Primrose Oil, also referred to as EPO, is oil from the evening primrose plant. Evening Primrose is one of the oldest known plant remedies to be used for pregnancy, and was used by Native Americans. Evening Primrose is not just for pregnancy. It is commonly used to ease uncomfortable symptoms of menstruation, ovulation, and menopause, among other things. Some women have found it particularly effective in boosting fertility and achieving pregnancy. It’s also safe for use while breastfeeding."