We celebrate Rosh Hashanah with sweet foods, like apples dipped in honey and honey cake, as a wish for a sweet year. Some families also celebrate with symbolic foods like the head of a fish, pomegranates, and carrots. This is a symbol of having a year in which we are on top and not the bottom.
Pomegranates are symbolic of plenty.
Far too many to count. We want plenty of health and happiness for the New Year, just as many good things as there are seed in a pomegranate. We also eat carrots, and it isn't just to see better in the dark. We want more of all the good things in life. More health, more happiness, more success.