Women worship at a bo tree. A circular shrine
has been built around the bo tree and colorful
penants have been hung from the shrine as a
sacred offering.
The commonest object used by the Buddha, is a Bo tree. Under its shade he attained Enlightenment. There is one in almost every temple, and some grow elsewhere besides. Wherever a Bo tree grows it is sacred: it may not be cut down, and it may receive offerings.
One type of offering seems to have entered Buddhism from earlier tree worship via the Bo tree: a piece of cloth, nowadays formalized as a flag, may be tied on to a branch.