What does Genesis 30:14 mean?

During the wheat harvest, Reuben went out and found some mandrakes in the field and brought them to his mother Leah. Rachel asked Leah, 'Please give me some of your son's mandrakes.' Genesis 30:14 - Modern Text Bible

(Reuben, Leah's son, finds mandrakes—plants thought to help with fertility. Rachel, still desperate for children, asks Leah for some.)