Suruga Take Senjiku Zaiku
Suruga Take Senjiku Zaiku (駿河竹千筋細工) is a woodwork craft produced in and around Shizuoka City, Shizuoka Prefecture, with origins traceable to the Yayoi period. It is designated as a national Traditional Craft (伝統的工芸品) by the Japanese government and also holds status as a regional collective trademark (地域団体商標). The craft is part of a broader tradition of Japanese Wood & Bamboo Crafts that spans numerous regions and techniques across the country.
History
Evidence of bamboo craft in the Suruga region reaches back to antiquity: in 1947, a basket (kagozaru) was excavated from the Toro ruins, suggesting bamboo craft was already established as a daily utensil during the Yayoi period. High-quality Madake (Phyllostachys bambusoides) and Hachiku (Phyllostachys nigra var. henonis) have long grown wild along the Abekawa River and its tributary the Warashina River in the Suruga-Fuchu area, now present-day Shizuoka City. The villages of Asahata, Hatori, and Nagata were historically major producers of Hachiku bamboo.
In 1623, a bamboo woven pillow made in Suruga was presented at a flower-viewing banquet at Edo Castle, as recorded in the geographic record Suruga Zasshu. During the Kan'ei era (1624–1644), bamboo craft shops selling pillows, insect cages, summer hats, and viewing boxes were operating in Shichikenmachi below Sunpu Castle, and more than 40 households of Sunpu Kusabuka doshin (low-ranking samurai) engaged in making bamboo hats as a side occupation. Tokugawa Ieyasu, during his retirement in Sunpu, had falcon-hunting feed boxes made from bamboo higo, contributing to the refinement of the craft.
The origin of the Sensuji (千筋) style specifically is attributed to 1840, when Sugawara Kazuga, a samurai of Okazaki Domain in Mikawa Province, taught his techniques to Shimizu Hyoei, son of the innkeeper Hafuya in Sunpu. Shimizu subsequently trained many disciples, including Yamamoto Yahei and Sato Kichiyemon, spreading confectionery containers and insect cages to a broader public. From the mid-Edo period onward, Suruga bamboo craft became a recognized souvenir of Shizuoka Prefecture.
During the Meiji era, the number of full-time producers reached 40 households and annual production value reached tens of thousands of yen. From the 1910s to the 1920s, the variety of designs increased greatly. At the Vienna World Exposition in 1873, Suruga bamboo vessels, hand baskets, confectionery containers, insect cages, and bird cages were exhibited as Japanese special products, triggering active exports overseas. Before World War II, exports were primarily to Europe; after the war, production shifted mainly toward the American market.
The Shizuoka Bamboo Craft Association (静岡竹細工組合) was established in 1909, proposed by Ishihara Kametaro, Mizutani Kenzaburo, and Iida Ryutaro. The 1923 Great Kanto Earthquake caused severe damage to the industry, which relied on trade. Recovery came around 1927 as the economy improved and orders increased. In 1940, materials essential for production — including lacquer, glue, nails, and charcoal — were placed under a rationing system. The Shizuoka Bamboo Vessel Industrial Cooperative (静岡竹器工業組合) was established on April 12, 1941, with Suzuki Jitsuzo as director; during wartime, the number of cooperative members fell to approximately 20 households. The cooperative was renamed the Shizuoka Bamboo Vessel Facility Cooperative (静岡竹器施設組合) in July 1944, then the Shizuoka Prefecture Bamboo Vessel Industrial Cooperative (静岡県竹器工業協同組合) in April 1947, before being dissolved on May 4, 1949.
From 1955 to 1965, orders were plentiful and production increased year by year, reaching a peak around 1960 with approximately 70 dealers. In October 1960, then-cooperative chairman Iida Yoshizo discovered bamboo groves in the Tenryugawa mountain area, and on October 15, 1960, negotiations with the Toyooka Village Forestry Cooperative were concluded, agreeing to purchase more than 4,000 bamboo culms annually. The flowering death (kaika-kashi) of Madake, which occurs approximately every 120 years, began in Kyoto's Sagano in 1963, and by 1965 the Madake there had completely died out, reducing Madake's share of bamboo forests along the Abekawa and Warashina rivers from approximately 70% to 40%. The 1970 dollar shock directly impacted exports, causing an increase in craftsmen switching trades and making the 1970s the most difficult period for the craft.
Techniques & Production Process
The defining characteristic of Suruga Take Senjiku Zaiku is the use of round higo — cylindrical bamboo strips — as opposed to the flat higo used for weaving in other bamboo craft-producing regions. This technique of using round higo originated from the making of bird cages and insect cages, born from craftsmen's consideration to avoid injuring the whiskers and feathers of the animals kept inside. The craft is also practiced as a related form in Beppu Takezaiku, though the two traditions use distinct structural methods. The structure of Suruga Bamboo Craft involves drilling holes in a bamboo frame and threading round higo through them. Round higo used range from 0.8 mm to 3 mm in diameter; the most commonly used sizes are 1.3 mm and 1.6 mm.
Craftsmen distinguish between higo (round strips after being passed through a higo-tool) and hego (bamboo strips with corners remaining before the rounding process). Higo are broadly divided into round higo and flat higo; flat higo are used for weaving the bottoms and lids of confectionery containers and trays. Higo production alone consists of more than 20 steps, and the overall production process can involve more than 100 steps in total.
The preferred raw material is Madake (Phyllostachys bambusoides), valued for its long internodes and straight trunk. Freshly cut green bamboo — which contains much moisture and is soft to process — is used for higo. Only the ama-kawa (the layer just beneath the bamboo's outer surface), which accounts for approximately one-fifth of the bamboo's total thickness, is used for higo, as it is the most durable part with the best color and luster. The remaining four-fifths of the bamboo's flesh is used for making rings and bottoms.
Higo dyeing is carried out by simmering in stainless steel cans with dye obtained from raw material dealers. For soot-colored dyeing, tea powder serves as the basic dye and main ingredient, with a small amount of additional dye, followed by washing and approximately half a day of sun drying. Annual Madake consumption by 68 cooperative members is approximately 4,000–4,500 culms, while supply from bamboo dealers within Shizuoka City is only about 2,000 culms.
Suruga Take Senjiku Zaiku is structured as a cottage industry (家内制手工業), in which a single craftsman performs nearly all work from obtaining materials to completing the finished product. This distinguishes it from more industrialized craft production models such as those seen in Suruga Sashimono, another woodwork tradition from the same prefecture.
How to Identify Suruga Take Senjiku Zaiku
The most distinctive visual feature of Suruga Take Senjiku Zaiku is the use of round higo rather than flat woven strips, giving finished pieces a regular, cylindrical-rod structure threaded through a drilled bamboo frame. Post-World War II products are further characterized by the use of undyed, natural green bamboo, distinguishing them from pre-war pieces that incorporated dyed higo. The extreme fineness of the higo — with the most common diameters measuring just 1.3 mm and 1.6 mm — reflects the craft's name: one theory holds that when higo are lined up across the width of a tatami mat (approximately 91 cm), about one thousand can fit side by side.
The Craft Today
Suruga Take Senjiku Zaiku continues to be produced in and around Shizuoka City, Shizuoka Prefecture, a region with a warm climate and abundant rainfall suitable for bamboo cultivation. The craft holds national designation as a Traditional Craft and is registered as a regional collective trademark. The cooperative structure that has supported the craft since 1909 — through various reorganizations — remains a framework for coordinating raw material supply, with 68 cooperative members collectively consuming approximately 4,000–4,500 Madake culms annually. Supply constraints persist, as local bamboo dealers within the city can provide only approximately 2,000 culms annually, necessitating procurement from outside the immediate area such as the Tenryugawa mountain region. The Aoyama Square gallery in Tokyo, operated by the General Foundation for the Promotion of Traditional Craft Industries (一般財団法人 伝統的工芸品産業振興協会), regularly presents exhibitions of traditional crafts including those of Shizuoka Prefecture, providing a venue for public engagement with the craft.
Frequently Asked Questions
What does the name "Senjiku" (千筋) mean?
There are three theories. The first holds that when bamboo higo are lined up across the width of a tatami mat (approximately 91 cm), about one thousand higo can fit, indicating how thin they are. The second theory is that one thousand thin higo were treated as one bundle for use and trade. The third theory is that the name derived from the word sensuji (繊筋), meaning fiber strands, referring to extremely thin strands made from bamboo fibers.
How does Suruga Take Senjiku Zaiku differ from other Japanese bamboo crafts?
Unlike other bamboo craft-producing regions that weave flat higo, Suruga Take Senjiku Zaiku assembles round higo by threading them through holes drilled in a bamboo frame. This round higo technique originated from the making of bird cages and insect cages, developed by craftsmen seeking to avoid injuring the animals inside.
What bamboo species is used, and why?
Madake (Phyllostachys bambusoides) is the primary material, valued for its long internodes and straight trunk. Only the ama-kawa — the layer just beneath the outer surface, comprising approximately one-fifth of the bamboo's thickness — is used for higo, as it is the most durable part with the best color and luster.
How many production steps does the craft involve?
The overall production process can involve more than 100 steps. Higo production alone consists of more than 20 steps. The craft is practiced as a cottage industry, with a single craftsman typically performing nearly all work from obtaining raw materials to completing the finished product.
When did Suruga Take Senjiku Zaiku first gain recognition outside Japan?
At the Vienna World Exposition in 1873, Suruga bamboo vessels, hand baskets, confectionery containers, insect cages, and bird cages were exhibited as Japanese special products to promote industry. This exhibition triggered active exports overseas, initially primarily to Europe, and later, after World War II, mainly to the American market.
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