5. Cherry Tree
Japan protects the Cherry tree more than others because it is a sign of hope in Japanese culture. There are around 200 species in this country. Its lifespan is about 16 - 20 years while there are some lived more than 25 years.
Maybe you don't know that you can eat its leaves. The Cherry Tree leaves often used in Japanese teas. It's also known as a symbol of friendship between the United States and Japan.