How Shodoshima became olive country

Today, and March 15th annually, is Olive Day オリーブの日 in Japan. It traces its origins to Shōdoshima in Kagawa Prefecture. It is said that Japan started agriculture experiments on the island in 1910. The success of the 1910 plantings became the foundation of Japan’s olive industry, eventually leading to the island’s identity as the country’s “olive birthplace.”

"Olive day" was established in 1972 by the local “Association to Protect Olives,” inspired by a meaningful historic moment. In 1950 the Shōwa Emperor visited the island and personally sowed olive seeds. Those seeds successfully sprouted and have since grown into a dignified, mature tree - a living symbol of care, continuity, and quiet resilience. Olives thrive in dry climates, and their successful cultivation on Shōdoshima marked a turning point in Japan’s agricultural experimentation.

The anniversary encourages people to learn more about olives, their history, and their cultural significance. Events on Shōdoshima highlight the island’s long relationship with this Mediterranean tree and how it formed its olive country image.