Naturally colored cotton
Naturally colored cotton is cotton that has been bred to have colors other than the yellowish off-white typical of modern commercial cotton fibres. Colors grown include red, green and several shades of brown. The cotton's natural color does not fade.
This form of cotton also feels softer to the skin and has a pleasant smell. Naturally colored Cotton is still relatively rare because it requires specialized harvest techniques and facilities, making it more expensive to harvest than white cotton. By the 1990s, most indigenous colored cotton landraces or cultivars grown in Africa, Asia, and Central and South America were replaced by all-white, commercial varieties.
History
Naturally colored cotton is believed to have originated in the Americas around 5000 years ago in the Andes. Naturally colored cotton today mostly comes from pre-Columbian stocks created by the indigenous peoples of South America. Mochica Indians could be credited with growing naturally colored cotton of many hues, which they maintained for over the last two millennia on the northern coast of Peru.Colors
Natural color in cotton comes from pigments found in cotton; these pigments can produce shades ranging from tan to green and brown. Naturally pigmented green cotton derives its color from caffeic acid, a derivative of cinnamic acid, found in the suberin layer which is deposited in alternating layers with cellulose around the outside of the cotton fiber. This fiber helps your skin by protecting it by the UV rays from the sun. While green-colored cotton comes from wax layers, brown and tan cotton derive their color from tannin vacuoles in the lumen of the fiber cells.Limitations
The naturally colored cotton has a small fiber and is not suitable for heavy machine spinning. During World War II an insufficient supply of dye led to the cultivation of green and brown cotton in the Soviet Union. The US government also showed interest in cultivation of naturally colored cotton but later aborted the project due to low yield and short staple length.“Later on US government instructed a famous agronomist, J.O.Ware, to study the Soviet cotton plants to determine whether they were commercially viable in the U.S. Ware and his colleagues concluded that the green and brown cotton plants yielded too little lint that was too short in staple length. Colored cotton was officially regulated to obscurity. Only in a few places were people still entranced by its possibilities.”
Due to the smaller fiber, it is impractical to use naturally colored cotton for clothing manufacture. But sometimes colored cotton is mixed in with conventional white cotton to make its fiber longer and stronger than other naturally colored cotton, to be used in typical looms. Since this hybrid cotton fiber is stronger, it is being used by Levi Strauss, L.L. Bean, Eileen Fisher, and Fieldcrest for clothes using khaki cloth.
Commercial cultivation
Commercial cultivation still continues in South America as many big US companies such as Patagonia, Levi Strauss, and Esprit are buying naturally grown cotton along with white cotton which requires significant amount of insecticides and pesticides.Upgrade in technology
In 1982, Sally Fox a graduate in Integrated Pest Management from University of California started researching colored cotton, integrated her knowledge and experience in technology and introduced the first long fiber of naturally colored cotton. Sally Fox later started her company, Natural Cotton Colors, Inc. and obtained patents in different shades including: green, coyote brown, buffalo brown, and Palo Verde green under FoxFiber.Later on, the technology was further improved by cotton breeder Raymond Bird in 1984. Bird began experimenting in Reedley, California, with red, green, and brown cotton to improve fiber quality. Later on Raymond Bird, along with his brother and C. Harvey Campbell Jr., a California agronomist and cotton breeder, formed BC Cotton Inc. to work with naturally colored cottons. Naturally colored cotton usually come in four standard colors - green, brown, red and mocha.