The Linen Fiber Family: A Comparison of Advantages and Disadvantages of Four Major Fibers — Flax, Ramie, Hemp and Apocynum

I、The Four Fibers: Different Origins, Unique Merits

Many people regard linen as a single type of fabric. In fact, flax, ramie, hemp and apocynum come from four entirely different plants, so their fiber properties vary greatly. Botanically, these bast fibers are extracted from plant stalks.

Flax originated in the Near East and the Mediterranean regions. Ramie, known as “China Grass”, is native to China, which accounts for over 90% of the global output. Industrial hemp (THC content below 0.3%) features low carbon emissions and eco-friendly growth. Apocynum thrives in arid and saline-alkali lands in northern China and earns the title “King of Wild Fibers”.

The four fibers differ sharply in nickname, hand feel, moisture absorption, air permeability, antibacterial performance, tensile strength, durability and application scenarios. Below is a detailed comparison.

Known as the “Queen of Natural Fibers”, flax feels soft and smooth with good drapability. It has strong moisture absorption at a moisture regain of 12%–15% and above-average air permeability, yet dissipates heat relatively slowly. Its antibacterial effect is moderate, relying on its porous physical structure. Flax boasts high tensile strength, which further increases when wet. However, it has poor elasticity, wrinkles easily and offers average durability. It is widely used for summer wear, shirts, tablecloths and vintage home textiles.

Ramie is dubbed “China Grass” and “Everlasting Soft Gold”. The fiber feels stiff and wear-resistant, but turns rigid when wet. It delivers the strongest moisture absorption — 3 to 5 times that of cotton — along with top-tier air permeability and rapid heat dissipation. Rich in natural bacteriostatic substances like glycosides and purines, ramie works well against bacteria. It has the highest tensile strength, 7 to 8 times that of cotton. Still, it is stiff when wet, low in elasticity, prone to pilling and not highly durable. Common uses include summer cloth, cooling mats, curtains and anti-radiation textiles.

Hemp wins the reputation of “King of Bast Fibers” and “King of Natural Fibers”. Its fine, soft fibers with round tips never irritate the skin. It excels in moisture absorption and air permeability thanks to strong capillary action. Containing cannabinol, hemp achieves the best antibacterial effect with a sterilization rate above 99%. It features high tensile strength, which rises by 20% when wet, and stands tough and durable. It is ideal for underwear, socks, sun-protective clothing, military supplies and medical dressings.

Apocynum is also called “King of Wild Fibers”. The fiber is soft, sleek and lustrous like silk. Its moisture absorption is close to cotton, paired with decent air permeability. Flavonoids and amino acids inside grant it sound antibacterial properties. It has fairly high strength but average durability. Limited yield and poor spinnability restrict its application. It is mainly made into far-infrared health-care apparel and functional home textiles.

II、Flax: The Queen of Natural Fibers

Flax is the most commonly used linen fabric in daily life. Its standard moisture regain stands at 12% to 15%, higher than cotton’s 8% to 10%. When your skin sweats, each gram of flax can absorb around 17 grams of moisture and wick sweat away quickly.

Besides, flax features natural odor resistance and anti-static properties, and it offers decent UV protection with a UPF value of 20 to 40. The fiber feels fine and delivers excellent drapability.

Nevertheless, it also has drawbacks. Flax wrinkles easily and has low elasticity. It feels slightly grainy when first worn and softens only after repeated wear and washing. What’s more, pesticides are needed during planting, and its processing may cause pollution.

III、Ramie: China Grass

Ramie is a unique fiber native to China, and the country produces over 90% of the world’s total output. Its moisture absorption rate is 3 to 5 times that of cotton, so it works perfectly in hot and humid conditions.

Furthermore, ramie contains natural bacteriostatic compounds such as glycosides, pyrimidines and purines. It retains an antibacterial rate above 98% even after 50 washes. The fiber is twice as strong as cotton and boasts exceptional wet strength, plus it resists mildew and rot well.

On the downside, ramie turns stiff when wet. It features great stiffness but lacks softness, and may cause an itchy feeling against the skin when worn next to the body. It also has extremely poor elasticity, so creases hardly bounce back. In addition, it is not very wear-resistant and tends to pill easily.

IV、Hemp: King of Bast Fibers

Industrial hemp with THC content below 0.3% delivers the most balanced overall performance among all these fibers. Its fiber features a hollow structure and an irregular polygonal cross-section, plus round and smooth tips, so it never irritates the skin when worn next to the body.

Moreover, hemp offers outstanding moisture absorption and air permeability with remarkable capillary action. It contains cannabinol that inhibits various bacteria, achieving a sterilization rate of over 99%. This fiber can block more than 95% of ultraviolet rays and also boasts excellent heat resistance, as it will not catch fire even at 370℃.

On the flip side, technical limitations such as degumming keep its cost high. Pure hemp fabric is quite scarce on the market, so most related products adopt blended materials instead.

V、Apocynum: King of Wild Fibers

Apocynum grows in the arid and saline-alkali lands of northern China, and its standout feature is the far-infrared radiation function. Besides, it is rich in flavonoids, amino acids and other health-beneficial ingredients. According to traditional Chinese medicine records, it helps relieve palpitations and dizziness, and also strengthens the heart and promotes diuresis. When its proportion reaches 35% or higher, it can assist in alleviating symptoms such as hypertension.

The fiber has a smooth, lustrous surface and feels gentle against the skin. Nevertheless, it comes with obvious drawbacks. Its output is very limited, and the fiber shows low uniformity with a high short-fiber ratio, leading to poor spinnability. For this reason, most commercial products adopt apocynum-cotton blends at a ratio of roughly 55/45, where the apocynum content generally ranges from 20% to 50%.

VI、Conclusion

Natural bast fibers stand out for their pure texture, great breathability, heat dissipation and antibacterial properties, making them irreplaceable fabrics for summer wear.

Flax is soft and skin-friendly, ideal for creating an elegant daily look. Ramie features a crisp texture and excellent heat dissipation, so it works perfectly in hot and humid climates. Hemp delivers well-rounded performance with strong antibacterial and UV-resistant effects, and it feels comfortable against the skin. Apocynum is a rare fiber with health-care benefits and auxiliary conditioning effects.

Therefore, when choosing linen fabrics, you need to match them properly based on skin feel, functions, budget and usage scenarios. Once you know more about these fibers, you can truly stay cool and comfortable all summer long.