Why do peaches have spots?

The spots on peaches are called "lenticels". Lenticels are small pores on the surface of plants that allow for the exchange of gases. They are found on all types of plants, but are most noticeable on fruits and vegetables. On peaches, lenticels appear as small, brown or reddish-brown spots on the skin. They are harmless and do not affect the taste or quality of the fruit.