Tanabata Guide: Origins, Bamboo Decor & Five-Color Wish Meanings
Explore the origins of Japan's Tanabata Festival on July 7, including the Orihime-Hikoboshi legend, the purpose of bamboo decorations, and the deep meanings of five-color wish strips.
On the night of July 7th every year, people look up at the starry sky to make wishes, a tradition known as "Tanabata" (the Star Festival). This seasonal event, with its colorful bamboo decorations and five-color paper strips (tanzaku) decorating the streets, is highly familiar to the Japanese people. However, few know the historical background, origins, and true meanings of why it is celebrated on July 7th, why bamboo is decorated, or what the wishes written on the strips originally meant.
Tanabata is not just a romantic star legend about Orihime and Hikoboshi; it is a multifaceted traditional event that has evolved over centuries by blending ancient Japanese rituals, star prayers from China, and East Asian Yin-Yang and Five Elements philosophy. In this comprehensive guide, we thoroughly explain the origins, legends, reasons behind bamboo and wish strips, and contemporary regional festivals across Japan.
Origins of Tanabata: Blending Three Traditions
Tracing the roots of Japan's Tanabata reveals that it is a fusion of three distinct events and beliefs: "ancient Japanese purification rituals," "Chinese star legends," and "Qixi/Kikouden (prayers for the improvement of handicraft skills)."
1. Ancient Japanese "Tanabata-tsume" (Weaving Maiden) Belief
The sacred prototype of Tanabata lies in the ancient Japanese legend of "Tanabata-tsume." This was a purification ritual where a chosen maiden (Tanabata-tsume) secluded herself in a weaving house near clean water to weave clothes for the gods, offering them on a sacred shelf (tana) to pray for an abundant autumn harvest and wash away the impurities (kegare) of the people. The loom used at this time was called "Tanabata," which later combined with the event held on the evening of July 7th to become the origin of the word "Tanabata."
2. The Chinese Star Legend of "Cowherd (Kengyu) and Weaver Girl (Shokujo)"
Another origin is the Chinese star legend. Orihime (Vega, the daughter of the Sky King and a master weaver) and Hikoboshi (Altair, a hardworking cowherd) became lazy immediately after marriage. Furious, the Sky King separated them across the Milky Way, allowing them to meet only once a year on the night of July 7th. This legendary tale reached Japan during the Nara period and merged with the native Tanabata-tsume weaving beliefs.
3. "Kikouden" Court Ceremony to Pray for Skill Improvement
In ancient China, because the Weaver Girl was a master of weaving, women celebrated "Kikouden" on the night of July 7th to pray for improvement in sewing, handicrafts, and poetry. This event was adopted by the Japanese imperial court during the Heian period. Nobles wrote poems on Kaji (mulberry) leaves and offered them while stargazing. As Kikouden spread to the common people, it evolved during the Edo period into the modern custom where children wrote characters on paper strips at temple schools (terakoya) to pray for calligraphy improvement.
[Historical Tidbit]
Tanabata was one of the "Gosekku" (Five Seasonal Festivals) officially established by the shogunate in the Edo period. People prepared bamboo the day before and made special offerings on the day, celebrating it as a major national and family event far grander and more solemn than today.
The Legend of Orihime and Hikoboshi: Astronomical Facts
While the story of Orihime and Hikoboshi is often told as a simple romance, its core contains a moral lesson: "a warning against laziness." The Sky King separated them because they completely abandoned their duties (weaving and cattle care) after marriage, disrupting the celestial order. This episode was widely used in ancient China and Japan as an educational tale to teach the value of fulfilling one's responsibilities.
From an astronomical perspective, the story is based on the movement of stars symbolizing the summer night sky. Orihime represents "Vega" in the Lyra constellation, and Hikoboshi represents "Altair" in the Aquila constellation. The Milky Way lies between these two bright 1st-magnitude stars. By adding "Deneb" in the Cygnus constellation, they form the "Summer Triangle," a giant celestial triangle in the night sky.
However, under the modern Gregorian calendar, July 7th is still in the middle of the rainy season in most areas of Japan, and the sky is often cloudy or rainy. Rain on Tanabata prevents them from crossing the Milky Way, and the rain that falls is compared to their tears, called "Sairuiu" or "Sharuiriu." On the other hand, under the traditional lunisolar calendar (corresponding to mid-to-late August today, known as the "Traditional Tanabata"), the rainy season has fully cleared, the moon sets early, and optimal conditions for observing the Milky Way are met.
Why We Decorate Bamboo and Trust Wishes to It
Why is bamboo or bamboo leaves chosen for Tanabata decorations? This is deeply related to the Japanese view of nature and spiritual world.
Bamboo grows very fast, shooting straight up toward the sky in a few months. Observing this amazing vitality, ancient Japanese people found a mysterious sacredness in bamboo and considered it as an antenna (yorishiro) to deliver wishes to the heavens. Since bamboo does not wither in winter and remains green, it symbolizes sacred power and life. The rustling sound of its leaves was believed to ward off evil spirits. The custom of flowing decorations down rivers at the end of the festival represents the ancient purification tradition of washing away impurities and placing wishes on the sacred water.
Five-Color Wish Strips (Tanzaku) & Yin-Yang Five Elements
The highlight of Tanabata is tying paper wish strips (tanzaku) to bamboo, and the colors represent deep ideas of East Asian philosophy. The five colors (Blue/Green, Red, Yellow, White, Black/Purple) originate from the "Yin-Yang and Five Elements Theory" of ancient Chinese natural philosophy.
According to this theory, all things are composed of five elements: Wood, Fire, Earth, Metal, and Water. Each element corresponds to a color and one of the five human virtues (Five Virtues: Benevolence, Propriety, Trust, Righteousness, Wisdom). Selecting a color was synonymous with showing the nature of your wish or the virtue you wished to enhance to the stars.
| Tanzaku Color | Five Elements | Corresponding Virtue | Specific Examples of Wishes |
|---|---|---|---|
| Blue (or Green) | Wood | Benevolence: Compassion, Kindness | Improving relationships, family harmony, wishes for others |
| Red | Fire | Propriety: Gratitude, Manners | Gratitude to parents, improvement in manners, respecting wisdom |
| Yellow | Earth | Trust: Honesty, Faithfulness | Maintaining friendships, gaining trust, honest/sincere wishes |
| White | Metal | Righteousness: Duty, Justice | Following rules, achieving resolutions, fulfilling obligations |
| Black (or Purple) | Water | Wisdom: Learning, Intellect | Academic success, passing exams, acquiring new knowledge/skills |
Thus, paper strip colors are not mere decorations but should be selected according to your wish. For academic success, use black or purple (regarded as noble); for gratitude, use red. Knowing these meanings makes Tanabata wishes much more meaningful.
Somen Noodles: Origin and Significance of Tanabata Food
The most popular food for Tanabata across Japan is "somen" noodles. Eating somen on Tanabata is a prestigious tradition that has continued for over a thousand years since the Heian period.
Its roots lie in "Sakubei," a Chinese wheat and rice flour pastry twisted like a rope and fried. According to Chinese legend, the emperor's son died on July 7th and became a demon spreading fever. Offering Sakubei, which he loved, pacified him, curing the disease. This led to the belief that eating Sakubei on July 7th ensures good health for the year. Sakubei evolved into somen, and by the Muromachi period, the custom of eating somen on Tanabata was established among the imperial court and nobles.
Additionally, the thin, white shape of somen resembles the Milky Way's flow or the weaving threads of Orihime, matching the theme of Kikouden to pray for weaving improvement. Today, people arrange it beautifully with star-shaped okra or carrots to visually enjoy the festival.
Comparison of Japan's Three Major Tanabata Festivals
In modern Japan, Tanabata has developed into huge tourist festivals. The "Three Major Tanabata Festivals" in Sendai, Hiratsuka, and Ichinomiya are famous for their unique history and gorgeous decorations.
| Festival Name (Location) | Timing | Key Features & Highlights | History & Scale |
|---|---|---|---|
| Sendai Tanabata Festival (Sendai, Miyagi) | August 6–8 (Lunisolar calendar base) | Gorgeous handmade washi paper ornaments like streamers. Features seven specific decorations representing distinct wishes. | Dating back to the era of Date Masamune, it attracts over 2 million tourists annually as Japan's largest Tanabata event. |
| Shonan Hiratsuka Tanabata (Hiratsuka, Kanagawa) | Early July (Gregorian calendar base) | Features illuminated decorations at night and unique ornaments reflecting current trends. Vibrant and colorful design. | Started in 1951 for postwar commercial recovery. Known for dynamic and flashy decorations. |
| Ichinomiya Tanabata Festival (Ichinomiya, Aichi) | Late July | Combined with the "Textile Thanksgiving Festival" to pray for the local textile industry. Large streamers decorate long arcades. | Started in 1956. Features shinto rituals offering threads to the textile deity at Masumida Shrine, faithful to weaving roots. |
Conclusion: Modern Significance of Wishing upon Stars
Even in modern society, where technology allows instant global communication via serverless networks, taking a moment to look up at the starry sky on July 7th holds special value. Reflecting on our wishes through the five colors of paper strips helps us reconnect with nature, self-growth, and compassion. This July 7th, write your true wishes on a paper strip while remembering their original meanings.
【Sources】
1. National Astronomical Observatory of Japan "Sky Information (July 2026)"
2. Ministry of Agriculture, Forestry and Fisheries "Feature: Tanabata Traditions and Somen"
3. Sendai City Tourism Info "History and Meanings of Sendai Tanabata"