In Hindu mythology, Tulsi (“matchless”) is known as Vaishnavi (“belonging to Vishnu”), Vishnu Vallabha (“beloved of Vishnu”), Haripriya (“beloved of Vishnu”), Vishnu Tulsi. The Tulsi with green leaves is
called Shri-Tulsi (“fortunate Tulsi”); also Shri is a synonym for Lakshmi, the principal consort of Vishnu. This variety is also known as Rama-Tulsi (“bright Tulsi”); Rama is also one of the principal avatars of Vishnu. The Tulsi with dark green or purple leaves and purple stem is called Shyama-Tulsi (“dark Tulsi”) or Krishna-Tulsi (“dark Tulsi”); Krishna is also a prominent avatar of Vishnu. This variety is considered esspecially sacred to Krishna, as its purple colour is similar to Krishna’s dark complexion.
Tulasi is the essence of all devotional activities
The leaves, flowers, roots, bark, branches, trunk, and shade of Tulasi Devi are all spiritual.
One who with devotion applies the paste of Tulasi wood to the Deity of Krsna will always live close to Krsna.
One who puts mud from the base of the Tulasi tree on his body and worships the Deity of Lord Krsna gets the results of one hundred days worship each day.
Vakti Devi tulsi devi quotes Tulasi
Puspasara=One who offers a Tulasi manjari to Lord Krsna gets the benefit of offering all other varieties of flowers, and he goes to the abode of Krsna.