The olive tree is present on earth since prehistory !!! It likes our Mediterranean climate where summers are hot and dry , winters are mild and wet . It needs the sun for fruit ( olives) , some water in summer, stony soil It can live up to 2000 years old, I remember a beautiful specimen in tree nurseries Pierre Basset Grimaud . It supports cold until -15 ° . Its fruit , the olive is a drupe . It ripens in the fall or early winter . it varies from green to brown as and when it evolves . In Western culture , it is a symbol of peace .