Usually seven pradakshinas are done around the tree in the morning time chanting “vriksha rajaya namah“, meaning “salutation to the king of trees.”
It claimed that the 27 stars (constellations) constituting 12 houses (rasis) and 9 planets are specifically represented precisely by 27 trees—one for each star.
This ties in with the chinese bronze tree of 27 fruits and 9 birds
The Bodhi Tree is said to represent Pushya (Western star name γ, δ and θ Cancri in the Cancer constellation).
Plaksa is a possible Sanskrit term for Ficus religiosa. However, according to Macdonell and Keith (1912), it denotes the wavy-leaved fig tree (Ficus infectoria) instead. In Hindu texts, the Plaksa tree is associated with the source of the Sarasvati River. The Skanda Purana states that the Sarasvati originates from the water pot of Brahma flows from Plaksa on the Himalayas. According to Vamana Purana 32.1-4, the Sarasvati was rising from the Plaksa tree (Pipal tree). Plaksa Pra-sravana denotes the place where the Sarasvati appears. In the Rigveda Sutras, Plaksa Pra-sravana refers to the source of the Sarasvati.