During the time of the Sufi Emir Sultan (Şemseddin Muhammed), who lived in Bursa between 1394 and 1429, religious, social and cultural conversations were held in the Emir Sultan Lodge. It is a kind of commemoration event held when the redbud flowers bloomed in Emirsultan Lodge. The herald of spring, the redbud tree, with its color among the blooming trees and its stance in nature, attracted the love of Emir Sultan and the people of Bursa. At the Emirsultan and Erguvan festivals, which are held every year in April when the redbud flowers bloom, Emirsultan's life, works, world of thought and Redbud tree, which has made a place for itself in all fields of art, are told to new generations in every aspect.