<human>:  Why is the Green man a symbol of fertility?
<bot>: The Green man is a symbol of fertility because he is a fertility god. He is a horned, green man who is often depicted as having a beard, holding a spear, and carrying a shield. He is often shown wearing a crown and is often shown standing over a pregnant woman. In many cultures, the Green man is associated with the god Pan, who is a god of nature, fertility, and the hunt.