As the legend goes for the famous Pachira also called as Money Tree:
The first modern Money Tree was born in Taiwan as a bonsai by a truck driver in the 1980s and it very soon turned into the icon of prosperity and popular with the Feng Shui practitioners. A man who was down on his luck prayed for prosperity, and soon discovered the money tree and took it home. He soon realized that from its seeds he could cultivate many more trees. He made a business selling these beautiful trees to others and made his fortune.
That is why the Money Tree is a popular gift in many cultures for money and abundance