Shonai Melons are a specialty of the Shonai region of Yamagata Prefecture, grown in the vast Shonai Sand Dunes. They are loved for their sweet, fragrant aroma and juicy, refreshing flesh, making them one of the region’s signature fruits of summer.
The Shonai Sand Dunes extend across areas including Sakata City, Tsuruoka City, and Yuza Town and form one of Japan’s notable dune regions. The sandy soil provides excellent drainage, while the difference between daytime and nighttime temperatures and the availability of high-quality groundwater create ideal conditions for growing sweet, high-quality melons.
One of the greatest advantages of the Shonai Sand Dunes for melon cultivation is their well-drained sandy soil. The area also receives abundant sunshine during the day, while temperatures fall at night. This difference between daytime and nighttime temperatures helps concentrate the melon’s natural sweetness.
In areas near the Shonai Coast, high-quality groundwater stored beneath the dunes is also used for agriculture. These natural resources work together to produce the fragrant, juicy melons that are characteristic of the Shonai region.
A wide range of melon cultivars are grown in the Shonai Sand Dunes. Well-known varieties include Andes Melon, Tsuruhime, Quincy, and Mariage. Each has its own characteristics in terms of flesh color, aroma, sweetness, and texture, making it enjoyable to compare different varieties.
Andes Melon is characterized by its attractive netted skin and yellow-green flesh. In particular, the “Andes Melon No. 1” is known for its excellent eating quality.
Tsuruhime is an original variety developed by JA Tsuruoka. It is available as Tsuruhime Melon, with green flesh, and Tsuruhime Red Melon, with orange-red flesh. Both varieties are known for their high sugar content and are also popular as gifts.
The main season for Shonai Melons generally runs from around June 20 to August 10. Melons grown in greenhouses begin shipping around mid-June, followed by melons cultivated under tunnel structures from around early July. Shipments continue through approximately early August.
For many netted melons distributed in Japan, growers commonly use a cultivation method in which only one fruit is allowed to develop on each vine. By concentrating the plant’s resources on a single fruit, growers carefully nurture each melon, helping produce its rich aroma and concentrated sweetness.
Melon cultivation in the Shonai Sand Dunes has a long history. It is said to have begun in 1918, and by around 1967, production of the Prince Melon, which was popular in Japan at the time, had also begun in the region.
Today, melons in a variety of cultivars are produced as one of the Shonai Sand Dunes’ representative agricultural products. The accumulated cultivation expertise of generations of farmers, combined with the natural characteristics of the dunes, supports the quality and flavor of Shonai Melons.
Stretching for approximately 35 km, the Shonai Sand Dunes are among the largest dune areas in Japan. In the past, however, strong seasonal winds carried large amounts of sand across the area, making the land difficult to cultivate and giving it a reputation as barren terrain.
To protect farmland from drifting sand, windbreak forests of Japanese black pine were gradually established from around the Edo period (1603–1868). Over generations, local communities developed these protective forests to shield the Shonai Plain from winter winds and blowing sand while also developing the land using groundwater.
The development of the protective forests on the Shonai Sand Dunes is also associated with the efforts of Honma Mitsuoka and others, members of a wealthy local farming family. The forests created through these long-term efforts have become an important part of the environment supporting agriculture in the region today.
What was once sandy, difficult-to-cultivate land was gradually transformed into productive farmland through the knowledge and determination of generations of local people. Today, the Shonai Sand Dunes produce a wide variety of agricultural products, including the sweet, high-quality melons for which the region is known.
Shonai Melons are a summer specialty shaped by the natural environment of the Shonai Sand Dunes, abundant groundwater, differences between daytime and nighttime temperatures, and a long history of cultivation. Another attraction is the opportunity to experience different aromas, flesh colors, sweetness, and textures depending on the variety.
If you visit the Shonai region in summer, be sure to try Shonai Melons at their seasonal best and enjoy the refreshing, juicy flavor created by the unique landscape between the sand dunes and the Sea of Japan.