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It is known across South Asia as a medicinal plant, commonly used in Ayurveda, and has an important role within the Vaishnavite tradition of Hinduism, in which devotees perform worship involving Tulsi plants or leaves.
There is also a variety of Ocimum tenuiflorum which is used in Thai cuisine, and is referred to as Thai holy basil, or kha phrao —not be confused with ordinary "Thai Basil", which is a variety of Ocimum basilicum.
Followers of Hindu traditions often keep a Tulsi plant in front of their house. On a specific day each year known as 'Kartik Shukla Dwadashi' (usually about two weeks after Diwali) there is a tradition wherein Tulsi plants will be beautifully decorated with structures made of sugarcane, mango leaves and flowers and then a puja (form of worship) is offered.
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