The date palm, which was recognised by UNESCO on Wednesday, has for centuries played an important role in the establishment and growth of civilisations in the hot and dry regions of the Arab world.

Now date palm-related knowledge, traditions and practices have been inscribed on UNESCO's list of Intangible Cultural Heritage of Humanity.

The tree, whose roots penetrate deep into the soil, allowing it to grow in arid climates, has not only been a source of food but also of economic gain.

"Date palms gather in oases of different densities within desert areas indicating the presence of water levels suitable for irrigation," according to a nomination put forward by 14 countries - Bahrain, Egypt, Iraq, Jordan, Kuwait, Mauritania, Morocco, Oman, Palestinian Territories, Saudi Arabia, Sudan, Tunisia, United Arab Emirates and Yemen.

"As a result, this aided mankind in settling down despite harsh conditions," said the document. Until this day, platters of dates adorn tables in homes and businesses across the Arab world, where the symbol of the date palm tree has historically presented prosperity.

The offering of the sweet fruit, coupled with a cup of coffee, is a sign of good old-fashioned Arab hospitality. According to the UN's Food and Agriculture Organization, the date palm is probably the most ancient cultivated tree. It was grown as early as 4,000 BC and used for the construction of the moon god temple near Ur in southern Iraq - the ancient region of Mesopotamia.