Tree worship is an integral part of Hinduism. Underlying the central concept that God exists in eveything, trees are held in a special esteem as they provide food, oxygen, shelter, etc. From ages, we have been worshipping certain kinds trees and plants and attributing each one of them to be the favourite of a particular God. But as is known, Hinduism never did anything without a solid scientific background, and this is valid in this regard also. Let us discuss the beneficial properties of each of these special sacred plants: 1)Tulsi (Basil - Ocimum basilicum): On top of the list of our sacred plants is Tulsi or Basil, as it is known in the western world. It is believed to be Lord Vishnu's consort, and is thus an inseparable part of any Puja to Lord Vishnu. Tulsi has several medicinal propeties, which include action against: 1)Common cold 2)Headaches 3)Malaria 4)Skin diseases 5)Respiratory disorders 6)Cholesterol 7)Kidney stones Tulsi also sharpens memory and its Mercury content is being used in anti-cancer drugs. It is no wonder that such a useful herb was held in high regard and worshiped by our ancient Vedic Indians. 2)Peepul (Sacred fig - Ficus religiosa): The Peepul tree is said to have originated from the body of Lord Vishnu, and is thus very dear to him. In ancient texts, it was called the Kalpavriksha, or one that can fulfill all wishes. The medicinal usages are enlisted below: 1) Constipation 2) Mumps 3) Jaundice - controls flow of excess urine In addition, the Peepul tree has the distinction of releasing oxygen for a larger period than other trees. That explains why it was placed in the centre of the villages, so that the surrounding atmosphere would be clean. It was also a fixture in temples, so that there would be a good supply of oxygen throughout the day for the visitors. 3) Bilva (Aegle marmelos): The Bael or Bilva is a favourite of Lord Shiva, as it has 3 leaves which are similar to the 3 eyes that Lord Shiva has. The Bael fruit can be used to treat: 1) Diarrhea and Dysentery 2) Asthma 3) Anemia Thus, by associating religion with these plants, our ancient Vedic Indians tried to instill in us a reverence for them, so that we may protect, preserve and cultivate these beneficial plants in the future.