There are about 2600 species of palm trees, most of them living in tropical,subtropical, and warm temperate climates.Palms are one of the best known and most widely planted tree families. They have held an important role for humans throughout much of history. Many common products and foods come from palms. They are often used in parks and gardens that are in areas that do not have heavy frosts. In the past palms were symbols of victory, peace, and fertility. Today palms are a popular symbol for the tropics and for vacations.