Agar or Aquilaria trees  are found naturally in the evergreen rainforests of South East Asia.

Its growth can be seen from the foothills of the Himalayas to Malaysia, Thailand and Japan. When the tree is naturally or artificially injured, the fungus grows spontaneously and turns into fragments of a stunning aromatic trunk of color found inside the trunk. This fragrance wood itself is called agarwood. It is also called as Resinous wood and Infected Wood. This stem and dried oil is more expensive than gold.

Agar or aqualaria trees in botany belong to the family of Thymelaeaceae.

In religious texts is in use as Aloes Wood and Eagle Wood and Gaharu are prevalent in the global market as Agar, Aqualaria and Uda etc.

They are mainly used in the Vedic field for mental illness, psychological well-being, asthma, respiratory problems, epilepsy prevention, and sexual stimulation. The royal palaces were used as a spice, cosmetics, traditional cuisine, brewery wine, etc. As well as a symbol of prestige.