Inside Japan’s Densuke Watermelon Farms_ Growing the World’s Most Expensive Watermelon

Inside Japan’s Densuke watermelon farms, farmers grow one of the world’s rarest and most expensive luxury fruits. In this farming documentary, we explore how the famous black-skinned Densuke watermelon is grown in Toma, Hokkaido, using greenhouse control, hand pollination and strict quality standards.

The journey begins with selected seeds, healthy seedlings and carefully prepared greenhouse beds. Farmers manage temperature, humidity, irrigation, nutrients and vine growth with precision. Instead of keeping many fruits, they follow the one vine, one fruit method, allowing the plant to focus its energy on a single premium watermelon.

As the fruit grows, farmers protect its smooth black rind, rotate it carefully, monitor maturity and control water to improve sweetness, texture and appearance. After harvest, each watermelon is polished, inspected, tested for quality and packed like a luxury gift.

Discover how Japanese farmers turn patience, precision and perfection into one of the most valuable watermelons in the world.