Ramie fabric is made from the bast fibers of the ramie plant (Boehmeria nivea), a perennial shrub in the nettle family. These fibers run along the inner bark of the plant’s stems and are composed of 80 to 85% cellulose, making ramie one of the purest natural cellulose fibers available. The plant has been cultivated for textiles in eastern Asia since prehistoric times, with ancient Egyptian cloth also made from ramie fiber.
The Ramie Plant
Ramie is a woody shrub that grows primarily in the montane regions of Southeast Asia, China, Korea, and Japan. Unlike annual crops such as cotton, ramie is a perennial that can be harvested multiple times per year from the same plant. China dominates global production, with most cultivation concentrated in provinces south of the Yangtze River Basin.
The plant is notably low-maintenance. Ramie crops typically require no irrigation during growth, and pesticide use is minimal. The fibers come specifically from the stem’s inner bark, a layer called the bast, which is stripped away during harvest in a process called decortication. These raw bast fibers are coated in a sticky, gum-like layer of plant compounds that must be removed before the fiber can be spun into yarn.
How Raw Fiber Becomes Fabric
The critical step in turning ramie stalks into usable textile fiber is degumming, which dissolves the natural gums binding the cellulose fibers together. Two main approaches exist: chemical degumming and bio-degumming.
Traditional chemical degumming involves soaking raw ramie in a concentrated alkaline solution under high pressure for six to eight hours. This method works but uses significant energy and produces heavily polluted wastewater. A newer alternative, oxidation degumming, uses a hydrogen peroxide and alkali solution at lower temperatures and shorter processing times. The fibers are soaked at around 85°C, then treated under pressure at 125°C, followed by a reducing wash and a final rinse. Bio-degumming, which uses enzymes or microorganisms to break down the gums, is the most environmentally friendly option, though it produces slightly less strong fibers.
The degumming method directly affects fiber quality. Chemically degummed ramie fiber has a tensile strength of about 585 MPa, while bio-degummed fiber comes in around 311 MPa. For comparison, untreated decorticated fiber measures roughly 68 MPa. Once degummed, the clean cellulose fibers are dried, softened with oils, and spun into yarn that can be woven or knitted into fabric.
What Makes Ramie Different From Other Natural Fibers
Ramie stands out for a few properties that set it apart from cotton, linen, and silk. It has a natural silky luster, excellent wet strength (it actually gets stronger when wet), and strong dimensional stability. The fiber absorbs moisture well, which makes it feel cool against the skin in warm weather.
Its high cellulose content gives it a stiff, crisp hand feel similar to linen but with more sheen. That stiffness is both a feature and a limitation. Ramie resists stretching and holds its shape, but it lacks the elastic recovery of cotton, meaning it wrinkles more easily and doesn’t bounce back from compression as readily.
Ramie Blends
Pure ramie fabric can be stiff and somewhat brittle, so manufacturers frequently blend it with other fibers. Ramie and cotton blends are among the most common. Blends with 60% ramie and 40% cotton were historically popular for sweaters and casual knits. Research on blend performance suggests the optimal ramie-to-cotton ratio falls between 10% and 30% ramie. In that range, the blend captures ramie’s luster, strength, and coolness while keeping cotton’s softness and ease of processing.
One quirk of blending: at exactly a 20% ramie ratio, fiber strength and uniformity dip to a minimum before climbing again at higher ramie percentages. So a 15% or 25% blend tends to perform better than a 20% one. As ramie content climbs past 30%, the yarn becomes less even and harder to process, and fabric compressive resilience drops, meaning the material feels tougher but recovers less from being squeezed or folded. Ramie is also blended with silk and synthetic fibers, where it adds body and reduces cost.
Caring for Ramie Fabric
Untreated ramie can shrink by 4 to 10% after washing or heat exposure. A ramie shirt with no pre-treatment can lose as much as 8% of its size after just the first wash. This is the biggest practical concern with ramie garments.
Higher-quality ramie clothing is pre-shrunk during manufacturing using controlled washing at progressively lower temperatures, from around 60 to 70°C down to 25°C. After proper pre-treatment, woven ramie should shrink no more than 2% in subsequent washes. If your garment hasn’t been pre-shrunk, washing in cool water and air drying will minimize shrinkage. Avoid tumble drying on high heat, which accelerates both shrinkage and fiber stiffening. Ramie wrinkles easily, so light ironing while the fabric is still slightly damp gives the best results.
Environmental Profile
Ramie has a relatively favorable environmental footprint compared to many textile crops. The plant grows without irrigation in its primary growing regions, relying on rainfall alone. Pesticide and herbicide inputs are low. During its growth phase, ramie absorbs carbon dioxide, partially offsetting the emissions from its processing stages.
The main environmental concern is degumming. Traditional chemical methods produce wastewater with high levels of organic pollutants, and the process is energy-intensive. Newer oxidation and biological degumming methods reduce both pollution and energy use, though they haven’t fully replaced older techniques in large-scale production. The cultivation and harvesting phases contribute most significantly to freshwater pollution and ozone-related impacts, primarily through the limited herbicides and pesticides that are applied.