Bilva or Bael tree is one of the holy trees in India.
The leaves of this tree have a great importance in the worship of Siva and Vishnu. These leaves are trifoliate by nature resembling a trident and representing the tree gods Brahma, Vishnu and Maheswara or the three Gunas Sattva, Rajas and Tamas.
According to a Sri Sukta, this tree was born from the penance of Goddess Lakshmi. Hence the leaves of this tree are dearest to Vishnu. Especially during the month of Dhanurmasa on all the days, bilva leaves are offered to Sri Venkateswara in the early morning Archana.