Kashiwa, also known as the Japanese oak, is a tree species native to Japan. It belongs to the family Fagaceae and is scientifically named Quercus dentata. Kashiwa trees can grow up to 20 meters tall and are characterized by their large, lobed leaves and acorns, which are an important food source for wildlife. In Japanese culture, kashiwa leaves are traditionally used to wrap mochi, a type of rice cake, especially during the Children's Day celebration. The leaves symbolize prosperity and the continuation of family lineage, making them an important element in various cultural practices and festivities.