Tulsi or Tulasi (Ocimum tenuiflorum) or Holy basil is a sacred plant in Hindu belief. Hindus regard it as an earthly manifestation of the goddess Tulsi, a consort of the god Vishnu.Tulsi is the Sanskrit name for an herb closely related to the common culinary herb basil. It's also ... The leaves are the useful portion of the plant. ... Holy-Basil.com · Medicinal Herb Info: Basil · Ayurvedic Cure: Holy Basil--Tulsi.Top 10 health benefits of tulsi - Tulsi also known as basil leaves, is a fairly common plant in Indian households. Considered holy by many religions, the tulsi plant is revered for its divine properties.