Nanohana: Rapeseed Fields of Early Spring

Long before the cherry trees open, bright yellow fields appear along the coast and rivers, and the same flowers end up on the dinner table.

Published October 19, 2026 at 1:35 AM JST | By Tokyo Paul

Quick answer: Nanohana are the yellow flowers of rapeseed and related brassica plants, blooming in Japan from January in the warm south to April and May in the north. Famous viewing places include the Boso Peninsula in Chiba, Ibusuki in Kagoshima and Yokohama Town in Aomori. The buds and leaves are also a popular seasonal vegetable, eaten lightly boiled or in tempura.

What nanohana means

Nanohana literally means "vegetable flower." The term covers the blossoms and flower buds of rapeseed and related brassica plants, the same family as cabbage, mustard and broccoli. The fields you see in spring are typically planted for decoration, for the tourism that comes with flowers, for cooking greens or for oil, depending on the region. In Japanese spring culture, nanohana ranks alongside plum and cherry as a sign that winter is ending.

Its bright color stands out in the pale landscape of late winter. The flower appears in poetry, haiku and seasonal greeting cards, and in the well-known song "Oborozukiyo" ("Hazy Moonlit Night"), which begins with a scene of rapeseed fields in the evening light. Seasonal markets sell bunches of nanohana from late winter, and the sight of fresh yellow buds beside daffodils and early tulips is a quiet signal that spring has begun. Gardeners also grow it in home plots.

When the fields bloom

Timing depends on latitude and elevation. In the south, such as Kagoshima's Ibusuki area, fields can bloom as early as January. In the Boso Peninsula of Chiba, the season is typically January to March. Around Tokyo and the Kanto plains, the peak is March to April. In the far north, such as Yokohama Town in Aomori, bloom comes in late April to May. This staggering of regions means you can follow the flowers across the country for several months.

Warm winters can bring the bloom forward, while cold snaps delay it. Check each venue's flower report before traveling, since the main festival periods are set by the local tourist association and may vary from year to year. Weather forecasts for spring blossoms often include nanohana, and local newspapers publish photos of the first fields to open. Keep an eye on these reports, and plan a weekday visit if you can.

Boso Peninsula and the Kanto region

The Boso Peninsula in Chiba Prefecture is one of the closest places to Tokyo to see nanohana. Fields in the southern area around Minamiboso, Tateyama and Kamogawa bloom early, often from January, and are paired with early-blooming cherry trees such as Kawazu-zakura in some places. It is a pleasant day trip from Tokyo by express train or highway bus. Other Kanto sites include large flower parks, where nanohana is planted alongside tulips and other spring flowers.

Showa Kinen Park in Tachikawa, Tokyo, and parks around Yokohama and Kanagawa are examples. Fields along riverbanks and former railway lines also bloom in spring. Many of these places are free or have a small entry fee. Some parks stage special events when the flowers peak, such as small markets or photo contests, and these are announced on park websites a few weeks ahead.

Kyushu, Shikoku and western Japan

Ibusuki, at the southern end of Kagoshima Prefecture, has a long-running nanohana season, and the bright fields look especially fine against the blue sea and the volcanic cone of Kaimondake. Ibusuki is also known for its sand baths, where visitors are buried in warm sand heated by volcanic activity, a favorite local activity. Elsewhere in western Japan, Awaji Island near Kobe and parts of Shikoku and the Seto Inland Sea have nanohana plantings in late winter.

Many are tied to farming cooperatives and local tourism. It is common to see the flowers lining roadsides and rice-field edges. Check regional tourism pages for events and viewing paths, as some fields open only in a certain period. Long coastal roads in these regions make for pleasant drives, and small stations on local lines often have flower beds beside the platform. A slow trip with frequent stops suits the mood of the season.

The far north: Yokohama Town, Aomori

Yokohama Town (not the city of Yokohama) in Shimokita, Aomori Prefecture, has one of the largest nanohana fields in Japan, with the planted area spreading across hillsides and valleys. The festival is held in May, when the rest of Japan has moved on to early summer flowers, and the fields turn the countryside yellow. The area is reached by train and bus from Aomori City, and a rental car makes it more convenient.

Northern spring weather is cooler, so bring a jacket. The region is known for seafood and for scallops from Mutsu Bay. Check the festival dates and any entry fees in advance. The event is smaller and calmer than the big southern ones. The northern bloom comes after most other regions have finished, so travelers who missed the southern fields can still catch the flowers here. Combine the trip with a visit to the Shimokita Peninsula's coast and hot springs.

Eating nanohana

Nanohana is a seasonal vegetable with a mildly bitter, fresh taste. The most common preparation is ohitashi, in which the greens are briefly blanched and dressed in a soy-and-dashi sauce. It is also served with karashi, a hot Japanese mustard, in karashi-ae, or with sesame dressing. Tempura and stir-fries are other options, along with pasta in Japanese-Italian restaurants. Because it is a spring vegetable, it appears in restaurant set meals and in supermarkets from February to April.

The flavor pairs well with clams, bamboo shoots and other spring ingredients. Choose bunches with tight buds and fresh green stems. Cook briefly to keep the color bright. If you are in Japan in spring, ordering a small nanohana dish is an easy way to taste the season. Look for it in bento boxes and in spring set menus, where small portions appear as a side dish. At home, add a few stems to miso soup or pasta in the last minute of cooking to keep the color bright.

Field etiquette and spring pairings

Many nanohana fields are working farms or carefully maintained parks. Stay on marked paths and do not walk among the plants, even for a good photograph. Do not pick the flowers unless a sign says it is allowed. Some places offer picking experiences for a fee. Respect farmers' signs and parking rules, and avoid drones unless permitted. Bring sunscreen and a hat, since spring light is strong in open fields. Pollen can be an issue for allergy sufferers, so bring medicine if needed. Spring wind in open fields can be strong, so keep hold of hats and light bags.

Photograph early or late in the day, when the light is soft and the yellow looks richest. Some fields have local stalls selling flower-themed sweets, pickles and vegetables, which make nice small souvenirs. Nanohana often blooms near other early spring attractions. In Chiba, you can combine it with early cherry blossoms and strawberry picking. In Izu, Kawazu-zakura trees line rivers in February and March alongside nanohana fields. Ibusuki has hot springs and sand baths. In Aomori, the fields come with the later sakura of the north.

Another idea is to combine the flowers with a rail trip. Some local lines run through fields, and a few use seasonal trains. Whichever you choose, nanohana is a cheerful way to enjoy early spring before the cherry blossom crowds appear. Check the local tourism association for a bloom map and take your time. Lines of bright flowers by the sea, a river or a small station platform are often the most memorable scenes, and local people are usually happy to point you to a quiet viewing spot if you ask politely.

Frequently Asked Questions

When is nanohana in bloom?

It depends on the region. Southern areas such as Ibusuki and the Boso Peninsula bloom from January, the Kanto plains from March to April, and northern Aomori in late April to May. Check local bloom reports. A quick look at the local tourism page a few weeks ahead will confirm the current schedule.

Is nanohana edible?

Yes. The buds, leaves and stems are a popular spring vegetable in Japan. They are usually blanched and served as ohitashi, dressed with soy sauce and dashi, or with sesame or mustard. They also appear in tempura and pasta. Staff on site can answer questions, and signs usually explain the process clearly.

Where is the best place to see nanohana near Tokyo?

The Boso Peninsula in Chiba is the most popular choice, with fields blooming from January to March. Showa Kinen Park in Tachikawa also displays nanohana in spring. Plan a day trip and check flower reports first. Arriving early makes the trip easier, especially when crowds build.

Keep Exploring

More guides from Tokyo Paul: Ume, Sakura or Momo: How to Tell the Spring Blossoms Apart, Japan in March: Early Blossoms and Changing Weather and Awaji Island: Hyogo's Island Between Honshu and Shikoku.