Irakusa Spinning and Weaving Customs of Echigo and Sado

Echigo and Sado Nettle-Fiber Weaving

On 5 November 1973, the Agency for Cultural Affairs added a quiet entry to its national register: the custom of gathering, spinning, and weaving fiber from nettle-family plants in the Echigo and Sado districts of Niigata Prefecture. The record carries no celebrated brand name and no signature product. What it preserves is the knowledge of turning wild plants into usable cloth, a skill older than almost any woven textile a visitor is likely to encounter in Japan.

Three plants stand behind the custom: aoso, akaso, and karamushi, all members of the nettle family (Urticaceae). By the early 1970s the practice survived only in scattered households of the Uonuma region and a few districts of Sado Island. Recognizing how thin that thread had worn, cultural authorities listed it as a Selected Intangible Folk Cultural Property, a category set aside for living traditions judged worth recording in detail before they vanish. It is a different and lower-profile status than the Important designation given to more secure traditions.

A Fiber Tradition Older Than Cotton

Before cotton spread through rural Japan during the Edo period, and before hemp was widely cultivated, country people clothed themselves in whatever the hills and fields supplied. Nettle-family plants were among the most useful of these. Their stems hold long, strong bast fibers that can be stripped, split, and spun without any planted field or specialized workshop. The Echigo and Sado custom is one of the clearest surviving examples of that older clothing economy, in which a garment began not in a cultivated crop but in the wild margins of a village.

The 1973 listing came with a specific aim. Because no single group held or protected the practice, the register notes simply that no body was designated, and the Agency commissioned a documentary record rather than naming custodians. That record, Spinning and Weaving Customs 1: Niigata and Tokushima, appeared in 1975 as the twentieth volume in a national series on intangible folk materials. It sets Niigata's nettle weaving beside the taifu cloth of Awa in Tokushima, two regional answers to the same problem of making cloth from wild plants.

Reading the Three Plants

Karamushi is the best known of the three. Botanists call it ramie (Boehmeria nivea), a perennial whose refined fiber is known as aoso. It is the same plant that supplies the region's famous summer kimono cloth, and in good conditions its fiber comes out fine, lustrous, and remarkably strong.

Akaso is a wild cousin. Its botanical name is Boehmeria silvestrii, and the reddish tint of its stems and leaf-stalks gives it its name, since aka means red. It grows untended along mountain paths and forest edges across much of the country, and its dried bark yields a coarser brown fiber. Where karamushi was something a household might tend, akaso was simply gathered.

Aoso, the third name in the record, most often refers to the prepared bast fiber of karamushi rather than a separate species. The overlap is a useful reminder that the old vocabulary of these crafts blurred the line between a plant and the thread it became.

The work followed a rhythm set by the plants. Stems were cut, the bark peeled, and the inner fiber separated by hand. Spinners split that fiber into hair-thin lengths and joined them end to end by twisting, a slow process done with fingertips rather than a spinning wheel. The thread was then woven on a simple body-tensioned loom.

From a Folk Custom to a Celebrated Cloth

The same Uonuma hills that nurtured the nettle-weaving custom also produced one of Japan's most admired textiles. Ojiya-chijimi and Echigo-jofu, woven from hand-spun ramie, became the first dyeing-and-weaving craft named an Important Intangible Cultural Property, in 1955, and were inscribed on UNESCO's Intangible Cultural Heritage list in 2009. Echigo-jofu is the plain-woven version; Ojiya-chijimi carries a fine surface crinkle called shibo.

The link between the humble custom and the luxury cloth runs through the same fiber. Both depend on ramie spun entirely by hand. The connoisseur's version, though, was refined into something far more exacting: thread split to extreme fineness, kasuri patterns tied off before dyeing, and a final whitening achieved by laying the woven cloth out on snow in late winter. The raw fiber today comes largely from Showa Village in Fukushima, the only producer left on the main island of Honshu. A traveler who wants to grasp the nettle-weaving custom will find this refined descendant far easier to witness.

Seeing It for Yourself

The nettle-weaving custom is intangible heritage in the fullest sense. It is a body of knowledge, not a building or a site, and by its own designation it survives only faintly. There is no village where a visitor can simply turn up and watch wild fiber being spun. What remains accessible is the living textile culture of the same region.

In Ojiya, the Sunplaza industrial hall keeps a showroom of finished cloth and a hands-on weaving corner where visitors can try the loom. The town sits on the Joetsu Line and is reachable via the Joetsu Shinkansen by transferring at Echigo-Yuzawa or Nagaoka, roughly ninety minutes from Niigata Station by rail. Late winter rewards the patient: around Shiozawa and Minami-Uonuma, bolts of cloth are spread across the snowfields for the traditional bleaching, a sight that explains directly why this craft took root in one of Japan's snowiest regions.

Sado Island, the custom's other home, lies across the sea by ferry from Niigata. The island is better known today for its former gold mine and its sado-okesa folk songs, but the self-sufficient island culture that once included wild-fiber weaving still surfaces in local museums.