The Bamboo in Your Chasen: A Guide to the Bamboo Types Used in Japanese Tea Utensils

There is a display at the Takayama Chikurin-en (高山竹林園, Takayama Bamboo Garden and Museum) in Ikoma, Nara, that stopped me the last time I visited. Several bamboo specimens mounted side by side, each labelled, looking nearly identical at first glance. But the labels told a different story: some said 茶筅用 (chasen use) and others said 茶杓用 (chashaku use). Same village, same craft tradition, same material at a glance. Different bamboo entirely.

That display is the starting point for this article. If you have ever used a chasen to whisk your matcha, or held a chashaku to measure out the powder, you have held bamboo in your hands. But almost certainly not the same bamboo. The world of Japanese tea utensils turns out to rest on a much more specific set of materials than most people realise, chosen with reasons that go back centuries, and understanding those reasons changes how you see the tools.

Japan is home to between 300 and 600 bamboo species depending on how they are classified, but in everyday life and in the tea ceremony world, three dominate. They account for the vast majority of bamboo found in Japanese forests and in Japanese craft.¹

The easiest way to tell them apart is the node, the raised ring that divides each section of bamboo culm. Moso (孟宗竹, mousouchiku) has a single ring at each node. Madake (真竹) and hachiku (淡竹) both have a double ring. Beyond that, size and colour do much of the work.²

Moso (孟宗竹, mousouchiku) is the bamboo most people picture. It is Japan's largest bamboo, reaching up to 22 metres (72 feet) in height and 18 centimetres (7 inches) in diameter.² Its node intervals are relatively short, and its walls are thick, making it better suited to construction and bulk material use than to fine craft work. In ideal conditions, both madake and moso have records of growing more than a metre in a single day.³ The spring takenoko (筍, bamboo shoots) that appear in Japanese cooking from March onwards are almost all moso. They are large, thick-fleshed, and mild enough that they need minimal preparation. Moso is the bamboo of the supermarket, the kitchen, and the construction site. In the tea ceremony, the root section of moso occasionally appears as a rustic mizusashi (水指, water container) for the tea room, and ikebana (生け花, Japanese flower arranging) uses moso culms as flower containers. But moso does not appear in chasen, chashaku, or hishaku (柄杓, tea ladles). Its fibres are too coarse, its walls too thick, and it is, by the standards of the craft world, too blunt an instrument.

Madake (真竹) is the workhorse of Japanese bamboo craftsmanship. Up to 20 metres (66 feet) tall, with long internodes, fine walls, and excellent elasticity, it has been the primary material for split-bamboo crafts throughout Japanese history.² Its fibres are strong and flexible in a way that makes it ideal for splitting, shaving, and bending into precise shapes. The takenoko of madake appears in May to June, at the very end of the bamboo shoot season, and is considered a connoisseur's ingredient: less widely available than moso shoots, with a clean, delicate flavour prized in some regions. In the tea ceremony, madake is the material for chashaku (tea scoops), hishaku (tea ladles), and hanaire (花入, bamboo flower vases). It is also the base material for most of the rare and prized "scenery bamboo" varieties discussed later in this article.

Hachiku (淡竹) is smaller than madake: typically 3 to 10 centimetres in diameter and up to 15 metres tall, and immediately recognisable by its surface: a faint powdery white bloom, as if the culm has been lightly dusted with chalk.² The shoots appear in May, between the moso and madake seasons, and are prized for their sweetness and almost complete absence of bitterness, edible raw without any soaking. In terms of use, hachiku has one supreme application in the tea world: the chasen. The reason is specific and structural. When hachiku is split with a blade, the fibres separate in a perfectly straight line, following the grain without deviation.⁴ This property is what allows a craftsman to split a single culm into 80 or 120 even, parallel tines without any tine deviating or cross-cutting its neighbour. No other bamboo does this as reliably. The chasen depends on it.

All Takayama chasen (高山茶筌, takayama chasen) begin as hachiku.

The timing and method of harvest are precise. Culms are cut in winter, when the sap has retreated and the bamboo is at its driest and most stable.⁴ The Edosenke, one of Japan's established tea schools, records from an interview with a designated traditional craftsman in Takayama that the bamboo suitable for chasen is harvested at two to three years of age, when its fibres have reached the right balance of density and flexibility.⁵ Bamboo of this age that is cut too early is too soft to hold its shape once split; left much longer, the fibres stiffen and lose their spring.

After cutting, the bamboo undergoes 油抜き (abura-nuki, oil removal), a boiling process that drives out the natural oils and moisture from the culm. What remains is then dried in cold winter air, often hanging in bundles under the eaves of workshops or suspended in frames outdoors, where the combination of cold temperature and dry wind gradually whitens the surface. This process is called 寒干し (kandoshi, winter drying), and the bundles of whitening bamboo hanging throughout Takayama in winter are one of the village's defining visual signatures. The finished material is called 白竹 (shiradate, white bamboo), and it is from this fully processed hachiku that the standard chasen is made.⁴

The school of tea you practise determines which bamboo your chasen is made from.

What this display makes visible is something that is easy to miss. Every chasen here is hachiku, processed through the same steps. But each type requires a culm of a specific diameter as its starting material: to fit 120 tines within a single culm's circumference, you need a wider culm than you do for a compact nodate whisk with far fewer tines. The bamboo supplier in Takayama (there is only one dealer who handles chasen bamboo for the entire village, as the knowledge required is too specialised for a general supplier) selects and provides culms matched to each type.⁵ The species is constant. The diameter is the first decision.

Shiradate (白竹) is the standard, used by Urasenke (裏千家) and most other schools including Yabunouichi (薮内流), Enshu (遠州流), Sekishu (石州流), Matsuo (松尾流), Kanamori Sowa (金森宗和流), and Hosokawa Sansai (細川三斉流).⁶ When you buy a chasen without specifying anything further, you are buying shiradate.

Susudake (煤竹, smoke-cured bamboo) is used by Omotesenke (表千家), and also by Urasenke for 貴人点 (kinin-date, the tea preparation for a person of distinguished rank). Susudake is not a species. It is a condition: madake or hachiku that has been suspended in the roof structure of a traditional thatched farmhouse, directly above a hearth (囲炉裏, irori), and cured there over decades or even a century or more by the rising smoke. The result is a deep amber or caramel-brown bamboo, with a distinctive patina and, in particularly prized examples, the white ghost of a rope mark where straw bindings once held the thatch. Each piece is unique. The problem is that susudake is now desperately scarce. Old thatched farmhouses with working hearths have largely disappeared from Japan, and the supply of genuine domestic susudake is nearly exhausted. Contemporary Omotesenke chasen increasingly rely on processed substitutes or imported material, and authentic domestic susudake commands very high prices.⁶

Kurodake (黒竹), also called shichiku (紫竹, literally purple bamboo), is used by Mushakojisenke (武者小路千家). It is a distinct species whose culms begin green and turn naturally black within approximately two years of sprouting.³ The darkening progresses gradually from the base upward, and the name shichiku refers to specimens where the colouration has a reddish-purple cast rather than pure black. Against the green of its remaining leaves, the black culm creates a striking contrast that has made kurodake a garden ornamental as well as a craft material.

The three main tea schools, three different bamboo types. The choice is not aesthetic in origin. Each tradition formalised its material during the Edo period, when different schools of tea developed distinct approaches to practice and equipment, and the bamboo became as much a marker of lineage as the shape of the whisk itself.

Here is where the Chikurin-en display makes its point. The chashaku (茶杓, tea scoop), a curved implement roughly 18 centimetres (7 inches) long used to measure powdered matcha from the tea caddy into the bowl, is also made from bamboo. But not from hachiku.

Almost all chashaku are made from madake. The reason is the opposite of why chasen uses hachiku. A chashaku is carved from a single strip of bamboo, not split into tines. The straight-splitting fibre property that makes hachiku indispensable for chasen is irrelevant here. What matters instead is the visual and tactile surface of the bamboo: its grain, its lustre, its colour, and above all the natural markings it may carry. In the language of tea, these markings are called 景色 (keshiki, literally "scenery"), and they are what elevates a piece of bamboo from a raw material into a tea utensil with character.

Madake develops keshiki in several distinct ways, and each named variety is prized as a chashaku material.

Shimidake or Shumidake (シミ竹, also written 染み竹 or 浸み竹) is madake that has developed brown stain markings as the bamboo ages. Shimidake is found particularly in madake growing near water (riverbanks, drainage channels, marshy ground) where moisture seeps into the surface over many years, producing irregular brownish-amber patches that craftsmen read as scenery.⁷ The markings on each piece are entirely unrepeatable, which is why a shimidake chashaku is treated as an individual object rather than a commodity. A dedicated Japanese Tea-Pedia article covers shimidake in more detail.

Susudake (煤竹) appears again here, because it functions as both a chasen material (for Omotesenke) and a prized chashaku material for all schools. The rope-mark pattern left by the straw bindings of a thatched roof is especially valued on a chashaku, where it becomes a kind of involuntary decoration produced by a century of domestic life above the hearth.⁶

Torafudake (虎斑竹, tiger-stripe bamboo) is perhaps the most remarkable material in the tea utensil world. It is a variant of hachiku that develops extraordinary tiger-stripe markings on the surface when heat is applied and the culm is wiped clean. These markings do not appear when the culm is raw. They emerge only through processing, as if the bamboo had been waiting to show its character. The extraordinary fact about torafudake is that it grows in only one place on earth: a specific set of bamboo groves in Awa district, Susaki City, Kochi Prefecture, on the Pacific coast of Shikoku. It has been transplanted elsewhere and the tiger markings do not appear. It has been grown in botanical gardens and the tiger markings do not appear. Researchers have proposed two possible explanations: parasitic fungi on the culm surface, and something particular in the soil composition of the Awa valley. Neither has been confirmed.⁸ Torafudake was named and formally described by botanist Makino Tomitaro (牧野富太郎) in 1916.⁸ Today it is produced by a single company, Taketora (竹虎), which has stewarded the groves since the Meiji period. In the tea ceremony, torafudake appears in chashaku and decorative utensils: the markings are too visually active for a chasen, but on the flat surface of a tea scoop they read as a natural painting.

The broader point the chashaku world makes is this: the tea ceremony has an aesthetic vocabulary for natural variation in materials, and bamboo is where that vocabulary is most richly developed. A piece of bamboo that has been slowly stained by water, or cured for a century in smoke, or marked by the soil of a particular hillside in Kochi, carries a history in its surface. The tea ceremony gives that history a name, a category, and a place in the ritual.

The answer is more complicated, and more interesting, than it first appears.

Bamboo has been part of Japanese life since the Jomon period (縄文時代, approximately 14,000 to 300 BCE). The Kojiki (古事記, 712 CE) and Nihon Shoki (日本書紀, 720 CE) both record takenoko being eaten as food and used as medicine. Bamboo appears in the Man'yoshu (万葉集, the 8th-century poetry anthology), in the 10th-century Taketori Monogatari (竹取物語, The Tale of the Bamboo Cutter), and in the great auspicious triad 松竹梅 (sho-chiku-bai, pine, bamboo, and plum) that still appears on New Year decorations, wedding gifts, and the menus of traditional restaurants.⁹ In that triad, bamboo's symbolic role is specific: it bends under the weight of snow but does not break, it grows straight and fast toward the sky, and it stays green through winter. These are the qualities of resilience, integrity, and vitality that the tradition has always associated with it.

But the bamboo in this symbolic landscape was not all the same bamboo. And here is where things become surprising.

Madake and hachiku, the two species that underpin the entire world of Japanese bamboo tea utensils, are old residents. The Forestry Agency notes that moso is not a native species and was introduced from China during the Edo period, but records no such introduction for madake or hachiku, which are considered to have been in Japan since ancient times.²³ They have been part of Japanese material culture for so long that they function essentially as native species. The chasen craftsmen of Takayama have been working with hachiku for 500 years. The chashaku craftsmen have been working with madake for at least as long. These are the bamboo of deep Japan.

Moso is a different matter entirely. The vast, dramatic bamboo forests that draw visitors to Arashiyama in Kyoto, the takenoko that Japanese people eat every spring and associate with deep cultural antiquity, are a documented Chinese introduction. Moso arrived in Japan during the Edo period (江戸時代, 1603 to 1868). There are competing accounts of exactly when and how: one widely cited account records that it was introduced from China to Kagoshima in 1736 and spread through the country from there.³ Another tradition credits the Chinese Obaku Zen monk Ingen (隠元隆琦, 1592 to 1673) with bringing moso to the Kyoto region. Multiple other regional traditions claim their own introduction.⁹ What is agreed upon is that moso spread widely across Japan only in the modern period, primarily through agricultural development after the Meiji period and the postwar expansion of takenoko farming.⁹

The irony is complete. The bamboo that seems most quintessentially Japanese, the dramatic towering green culms of the famous Kyoto forests, is a relatively recent arrival. The bamboo that has actually shaped Japanese craft culture for centuries, the quieter, older hachiku and madake, is considerably less famous.

When Sozei (宗砌) of the Takayama clan made the first chasen in the 15th century, he reached for hachiku because it was the material craftsmen in that valley already understood most intimately, a material with properties that had been learned and refined over generations. The 500-year lineage of the chasen is not just a lineage of craft. It is a lineage of knowing a specific bamboo.

¹ 「もっと知りたい竹のお話」[More Things to Know About Bamboo]. Informational display signage, Takayama Chikurin-en (高山竹林園), Ikoma, Nara Prefecture, Japan. Photographed 2026. Archived in Tealife Japanese Tea-Pedia Resource Library, Entry 004.

² 林野庁.「主な竹の種類」. 農林水産省 林野庁. https://www.rinya.maff.go.jp/j/tokuyou/take/syurui.html

³ 農林水産省.「身近で不思議なタケの生態に迫る！」. aff（あふ）, 農林水産省広報誌. https://www.maff.go.jp/j/pr/aff/2103/spe1_01.html

⁴ 奈良県.「高山茶筌」. ならの伝統工芸. https://www.pref.nara.jp/1381.htm

⁵ 川上新柳.「水屋日記 第12回 茶筌のこと(前編)」. 江戸千家会報 第137号 / 江戸千家公式ウェブサイト. 久保駒吉商店（伝統工芸士 久保建裕氏）取材. https://www.edosenke.jp/binran/mizuya/index12.html

⁶ 茶道裏千家淡交会青年部北海道ブロック.「No.1 竹の茶道具について」. 谷村丹後先生講演. https://hokkaidoblock.grupo.jp/free1162803

⁷ takehei inc.「しみ竹」. http://www.takehei.jp/take/simitake.php

⁸ 高知市.「虎斑竹（土佐の手づくり工芸品）」. 高知市ホームページ（外商支援課）. https://www.city.kochi.kochi.jp/site/tosa-kogei/tosanotezukuri-torahudake.html / 虎斑竹専門店 竹虎.「虎斑竹とは」. https://www.taketora.co.jp/c/special/ta0003

⁹ 国立国会図書館リファレンス協同データベース.「孟宗竹が日本に持ち込まれた時期を知りたい」. https://crd.ndl.go.jp/reference/detail?page=ref_view&id=1000197849 / 八女市.「竹の歴史」. https://www.city.yame.fukuoka.jp/soshiki/5/6/2/2/1454652533709.html