Date palms existed in Iran since ancient times. The date's exact origin is unknown, but it seems to be cultivated in Iran about 4,000 BCE. The palm tree is sacred; it is also interpreted as a sign of friendship, peace, and prosperity in Persian culture myths. They are a symbol of prosperity, fertility and ability to rise above conflicts. Once the tree's head is cut-off, it will no longer grow, and the trunk will start to become unstable and eventually die, just like human beings.
Up to 100 years ago the Persian gardens had preserved their ancient characteristics, but ever since then gradually and parallel with the alteration of viewpoints they distanced from their noble identity and now you can trace no sign of a new Persian garden, although their appearance has somehow been preserved, but no perfect sample, or even move for the revival of that forgotten paradise is seen.