Bunga mas

The bunga mas dan perak (lit. "golden and silver flowers"), often abbreviated to bunga mas (Jawi: بوڠا مس‎ "golden flowers"), was a tribute sent every three years to the king of Siam from its vassal states in the Malay Peninsula, in particular, Terengganu, Kelantan, Kedah, Pattani, Nong Chik, Yala and Rangae. The tribute consisted of two small trees made of gold and silver, plus costly gifts of weapons, goods and slaves.

There are several supposed origins of and reasons for the establishment of the tradition:

The practice ended in 1909, with the establishment of the British rule in most of the northern Malay states.