It is called Ipap tree because when flowers of Chionanthus retusa bloom, the whole tree covered with white flowers looks like steamed rice. Or, also it was called Iphamok (Beginning of Summer Tree) which means that flowers of a tree bloom at the onset of summer and then changed into current name.
The Ipap tree in Ssangam-myeon is estimated to be about 400 years old and 18m in height and 4.6m in girth.
Most of the big old Ipap trees in Korea are said to predict whether the year's rice crop will be rich or poor with the amount of flowers on a tree. Since Ipap trees grow well in a place with plenty of water, if there is proper rainfall, they bloom flowers in full or if they are short of rainfall, they cannot. And also rainfall is closely related to rice farming. Therefore the story originates from the result of observation of nature throughout long years of experiences.
As the Ipap tree in Ssangam-myeon has been considered a god that protects the village, they have been taken care by our ancestors since long time ago, and as they are very valuable as a material for biological study, they are designated and protected as a Natural Monument.