The Kingdom Of Heaven

One gets palm trees that grow very tall, and become quite large. You plant the tree as a small sapling, out somewhere in the open where there is a lot of space, like in a big garden. Over the decades the tree slowly grows as season follows season. As it grows its stem becomes long and tall, bare of all growth. The foliage is at the top of the palm tree in the form of branches that fan out from the centre, from the top of the stem. As the tree grows it sheds its leaves, and grows new ones. The dead branches with dead leaves fall of with time, and new ones grow. The tree always displays a proud cover of green leaves at the top. A mature palm is a beautiful tree, and can stand for a very long time.

(The Rise and Fall of Empires - Human History.)