The 32,000 kochia plants are manually planted each year in late spring to ensure uniform growth density.
The nemophila blue color is often referred to as 'Hitachi Blue' by local tourism agencies.
The hill was constructed as part of a land reclamation project on a former military site.
During the kochia season, the plants are harvested and used for traditional broom-making workshops within the park.
Miharashi no Oka is a prominent hill located within the Hitachi Seaside Park, serving as the site for seasonal flower displays that cover its slopes. The hill is famous for its transformation, featuring 5.3 million blue nemophila flowers in spring and 32,000 kochia bushes that turn crimson in autumn. The peak of the hill reaches an elevation of approximately 58 meters, providing a panoramic view of the Pacific Ocean and the surrounding Hitachi plains. The soil and terrain are specifically managed to support these high-density horticultural displays. Visitors traverse a winding path that spirals up the hill to navigate the incline. It is the signature feature of the park, covering an area of approximately 3.5 hectares. The area is maintained to ensure staggered blooming times for specific species throughout the year.
The summit of the hill, looking downward to capture the contrast between the flower-covered slopes and the ocean horizon.
Wear footwear with strong grip, as the walking paths are inclined and can be slippery after rain.
Check the park's official 'Flower Forecasting' page before visiting to ensure you arrive during peak bloom for the desired species.
Bring a hat and sun protection as there is minimal natural shade on the exposed slopes of the hill.
Visiting on weekends during peak bloom periods if you prefer fewer crowds, as the paths become highly congested.
Closed on Mondays; closed for maintenance periodically in early February and early June.
Stay strictly on the designated walking paths; trampling of flower beds is strictly prohibited.
