Japan’s Autumn Flower Festivals in September (2026): A Kaleidoscope of Blooms

September marks the start of autumn in Japan, a season that brings its own spectacular array of flower festivals. As temperatures cool, gardens and parks across the country burst into vibrant displays of iconic autumn blooms, many of them part of the revered “Seven Flowers of Autumn” (Aki no Nanakusa), alongside crowd favorites like red spider lilies, cosmos, kochia, pampas grass, and chrysanthemums. These festivals are a great excuse to get outdoors and see a different, quieter side of Japan’s natural beauty.

Typical autumn flowers in Japan (September bloom)

The “Seven Grasses of Autumn” (Aki no Nanakusa) are:

• Bush clover (Hagi): small reddish-purple flowers from late summer into fall.
• Japanese silver grass (Susuki or Obana): graceful plumes from late summer through autumn, often displayed during Tsukimi.
• Japanese arrowroot (Kuzu): vines with vibrant purple flowers.
• Pink (Nadeshiko or Dianthus superbus): delicate, frilled pink flowers blooming from late summer into fall, long associated with feminine beauty.
• Valerian (Ominaeshi or golden lace): clusters of small yellow flowers.
• Joe Pye weed (Fujibakama or thoroughwort): pale purple flowers with a sweet fragrance.
• Balloon flower (Kikyo or Chinese bellflower): star-shaped blooms in lavender, blue, or white from late summer into fall.

Other prominent September flowers include:

• Red spider lily (Higanbana or Lycoris radiata): striking maroon or vibrant red flowers blooming from mid-September to early October, often associated with the autumnal equinox (Higan). They’re considered poisonous and are traditionally avoided as cut flowers.
• Cosmos (Akizakura): often called “autumn cherry blossoms,” blooming from September into November in pink, white, yellow, red, and even near-black.
• Chrysanthemum (Kiku): the iconic autumn flower, blooming September through November and symbolizing longevity and nobility, it’s also the emblem of the Imperial Family.
• Japanese gentian (Rindou or Gentiana scabra): violet or blue blossoms found in mountainous areas from August through November.
• Japanese toad lily (Hototogisu or Tricyrtis hirta): distinctive spotted flowers blooming September to October.
• Osmanthus (Kinmokusei or fragrant olive): small orange flowers with a sweet, rich fragrance, from late September to mid-October.
• Japanese asters (Aster tataricus): delicate white-to-purple flowers from late summer into fall.
• Dahlias: reach their peak bloom from September to November.

Autumn flower festivals and viewing spots in September

Kinchakuda red spider lily festival (Hidaka City, Saitama Prefecture)

The standout event of the season: over five million red spider lilies (Manjushage or Higanbana) transform Kinchakuda Manjushage Park into a sea of crimson. The park’s distinctive “drawstring pouch” shape, carved by the meandering Koma River, only adds to the scene.

• Peak bloom: typically late September, with the festival running from around mid-September into early October.
• Activities: food stalls, local produce, crafts, and entertainment, and the Hidaka Chestnut Festival often overlaps with it.
• Access: about an hour by train from central Tokyo (Seibu Ikebukuro Line to Koma Station, then a 10 to 15 minute walk).
• Admission: around ¥500 for adults, free for junior high school students and younger. Exact dates shift with the bloom each year, so check the official Hidaka City site before you go.

Cosmos Festival (Showa Kinen Park, Tokyo)

Showa Kinen Park in Tachikawa hosts one of Japan’s largest floral displays, with over four million cosmos flowers across several dedicated gardens. In 2026, the Cosmos Festival runs September 12 through October 25.

• Gardens: the “Kibana Cosmos ‘Lemon Bright'” field (yellow sulfur cosmos), the “Autumn Bouquet Garden” with around 20 cosmos varieties, and a lilac-toned “Cosmos ‘Sensation'” field.
• Good to know: Showa Kinen Park is Tokyo’s largest park, with bike rentals, a bonsai garden, and a boating lake if you want to make a full day of it.
• Admission: ¥450 for ages 15 and up, ¥210 for seniors (65+), free for under 15.

Hagi Matsuri (bush clover festival): Mukojima-Hyakkaen Gardens, Tokyo, and Nashinoki Shrine, Kyoto

Bush clover (hagi), one of the seven iconic autumn flowers, blooms in mid-September.

• Mukojima-Hyakkaen Gardens (Sumida City, Tokyo): hosts its hagi festival from September 19 through October 12, 2026, centered on a 30-meter bamboo tunnel draped in purple and pink bush clover. This Edo-period garden is the only surviving “Edo flower garden” and a nationally recognized scenic and historic spot. Admission is ¥150 for adults, ¥70 for seniors (65+), free for elementary and junior high students living or studying in Tokyo.
• Nashinoki Shrine (near Kyoto Imperial Palace): holds its own Hagi Matsuri in September, usually in the back half of the month (the 2025 edition ran September 20 to 23), where worshippers tie poetry to the shrine’s roughly 200 to 500 bush clover plants. The program typically includes ikebana, kyogen theater, traditional dance, koto and shakuhachi music, kyudo archery, and tea ceremony using water from the shrine’s well. The lineup varies year to year and usually isn’t announced until closer to the date, so check the shrine’s site if you’re planning around it.

Choyo no Sekku (chrysanthemum festival)

Celebrated every year on September 9, this traditional festival, also known as Kiku no Sekku, honors the chrysanthemum. It’s believed to bring longevity and good health and ward off evil spirits, and remains the symbol of the Imperial Family. Traditions include drinking chrysanthemum sake, the dew-soaked silk ritual known as Kisewata, and elaborate chrysanthemum displays around shrines and gardens.

Kochia Carnival at Hitachi Seaside Park (Ibaraki Prefecture)

Usually running from mid-September into mid-October, this event features around 32,000 kochia bushes across the park’s hills, shifting dramatically from green to a vivid crimson as the season progresses. The park also has a cosmos field and red spider lilies blooming elsewhere on the grounds at the same time.

Cosmos at Yamanakako Hanano Miyako Park (Yamanashi Prefecture)

Set beside Lake Yamanaka at the base of Mount Fuji, this park’s 300,000-square-meter field of golden cosmos, sometimes called “the cherry blossom of autumn” (Akizakura), makes for one of the more striking Fuji backdrops of the season.

Hakone Sengokuhara pampas grass field (Kanagawa Prefecture)

From late September into early November, the slopes of Daigatake Mountain in Hakone turn silver with pampas grass (susuki), shifting from green to a shining silver and eventually pale gold. Susuki is also the grass traditionally displayed during Tsukimi moon-viewing.

Jindai Botanical Gardens (Chofu City, Tokyo)

Tokyo’s largest botanical garden, spanning 42 hectares and over 100,000 trees and shrubs across 4,500 varieties, has dahlias hitting peak bloom in September and October alongside its well-known rose collection.

Other spider lily festivals

Beyond Kinchakuda, red spider lilies also draw crowds at Hattanda Park in Takahama City, Aichi Prefecture (known for rare yellow spider lilies alongside the classic red, free admission and parking), and along a 3km stretch of the Tsuya River in Kaizu City, Gifu Prefecture (around 100,000 spider lilies, free admission, ¥500 parking).

Kiso Sansen Park (Gifu Prefecture)

Cosmos viewing generally runs from early September into early November here, with the Dahlia and Cosmos Festival, roughly 240,000 plants strong, running from late September into mid-November and often including evening flower illumination. Admission is free.

If a September trip to Japan is on your list, Exoticca’s A Taste of Japan: Tokyo, Kyoto & Osaka tour spends time in and around Tokyo, putting several of these flower spots within easy reach as day trips.