The poet goes on to call trees "the splendor of the plains," implying that they offer green and beauty to the plains. He claims that if we plant a tree now, it will grow into a future forest, which he refers to as a "forest heritage." This shows that planting trees is an act of caring for the environment and the future. Trees are often used in fantasy stories as a symbol of hope or protection. In Harry Potter and the Deathly Hallows, King Tommen II plants a row of trees at his wedding ceremony as a sign of peace between his kingdom and Voldemort's. The poet also uses trees as a metaphor for life after death when he says: "A tree will grow where a tree has grown. / So man will rise from the ashes of his death." This means that even though humans are mortal, their lives will continue on after they die. Trees have been associated with wisdom since ancient times. One example is the Tree of Life, which was believed to be alive and to bear fruit. Today, scientists think that trees can't move around or eat because they're too small. However, they do need water and food in order to grow. After humans die, their bodies decompose and become part of the soil. Trees then use the nutrients in the soil during their next growing season.