Japan's Ancient Plant Fibers

FORMULATED is the Tortuga Forma journal about the rituals we create around the home, the objects that bring us joy, and the stories behind how things are made.

Japan's Ancient Plant Fibers

This April, Tortuga Forma presented handwoven Japanese textiles rarely seen outside Japan at Sample House in Long Island City, NY.

The exhibition — including handwoven ramie with kasuri-dyed threads, traditional mud-dyed silk, handspun silk from Yuki, and basho-shi, a paper made from Okinawan banana fiber — remains on view through summer 2026. Book a visit by appointment.

Ramie woven in Noto, Japan

Ramie Fabric: What Lies Beyond Cotton

Ramie is one of Japan's most elusive plant fibers, prized for its strength and natural sheen. Traditionally woven into summer kimonos, this semi-transparent natural fabric lends itself beautifully to modern interiors — as lighting shades, window coverings, and room dividers that filter light the way paper screens do. The ramie plant — a member of the nettle family — has been cultivated in Japan for over a thousand years, yet it remains among the most labor-intensive fibers to harvest.

Extracting the usable fiber from the stalks requires a painstaking degumming process that cannot be fully mechanized. True hand-processed Japanese ramie is produced in diminishing quantities each year. When woven with kasuri-dyed threads, ramie takes on a depth and visual complexity that sets it apart from any industrial textile. The resulting cloth is at once ancient in technique and strikingly contemporary in effect.

Ramie Fabric: What Lies Beyond Cotton

Ramie is one of Japan's most elusive plant fibers, prized for its strength and natural sheen. Traditionally woven into summer kimonos, this semi-transparent natural fabric lends itself beautifully to modern interiors — as lighting shades, window coverings, and room dividers that filter light the way paper screens do. The ramie plant — a member of the nettle family — has been cultivated in Japan for over a thousand years, yet it remains among the most labor-intensive fibers to harvest.

Extracting the usable fiber from the stalks requires a painstaking degumming process that cannot be fully mechanized. True hand-processed Japanese ramie is produced in diminishing quantities each year. When woven with kasuri-dyed threads, ramie takes on a depth and visual complexity that sets it apart from any industrial textile. The resulting cloth is at once ancient in technique and strikingly contemporary in effect.

Yūki and mud-dyed Silk
Basho-Shi Paper, Origin: Okinawa, Japan

Yūki-tsumugi: Behind Japan's Hand-Spun Silk

The silk threads of Yūki, Japan begin their journey long before reaching the loom. Artisans hand-spin each thread from silk floss, moistening their fingertips with saliva as they draw out the fiber — a technique unchanged for centuries. The threads are then bound and resist-dyed, shibori-style, to create kasuri patterns that remain invisible until the threads meet on the loom. Only during the weaving process does the intended pattern emerge. Yūki's weavers work on a jibata, a backstrap loom fastened to the weaver's own body, joining artisan and machine into a single instrument. The resulting silk bolts, known as Yūki-tsumugi, are among the most expensive and sought-after textiles for kimono-making in Japan — and are recognized by UNESCO as an Intangible Cultural Heritage.

Basho-fu and Basho-shi: Textiles from the Okinawan Banana Plant

The art of transforming Okinawan banana fiber into basho-fu — a delicate cloth that softens in humid climates and stiffens and darkens in dry ones — was nearly lost in the twentieth century. Taira Toshiko, designated a Living National Treasure of Japan, played a central role in restoring basho-fu techniques and passing them to the next generation. Today, a more experimental generation of craftspeople is developing new uses for basho-shi, a naturally dyed, textured paper made from the same banana plant fibers. Like washi paper, basho-shi possesses a translucent quality, making it ideal for window treatments and lighting.

Yūki-tsumugi: Behind Japan's Hand-Spun Silk

The silk threads of Yūki, Japan begin their journey long before reaching the loom. Artisans hand-spin each thread from silk floss, moistening their fingertips with saliva as they draw out the fiber — a technique unchanged for centuries. The threads are then bound and resist-dyed, shibori-style, to create kasuri patterns that remain invisible until the threads meet on the loom. Only during the weaving process does the intended pattern emerge. Yūki's weavers work on a jibata, a backstrap loom fastened to the weaver's own body, joining artisan and machine into a single instrument. The resulting silk bolts, known as Yūki-tsumugi, are among the most expensive and sought-after textiles for kimono-making in Japan — and are recognized by UNESCO as an Intangible Cultural Heritage.

Basho-fu and Basho-shi: Textiles from the Okinawan Banana Plant

The art of transforming Okinawan banana fiber into basho-fu — a delicate cloth that softens in humid climates and stiffens and darkens in dry ones — was nearly lost in the twentieth century. Taira Toshiko, designated a Living National Treasure of Japan, played a central role in restoring basho-fu techniques and passing them to the next generation. Today, a more experimental generation of craftspeople is developing new uses for basho-shi, a naturally dyed, textured paper made from the same banana plant fibers. Like washi paper, basho-shi possesses a translucent quality, making it ideal for window treatments and lighting.

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