T EOTITLÁN DEL VALLE, Mexico — As a child, Porfirio Gutiérrez hiked into the mountains above the village with his family each fall, collecting the plants they would use to make colorful dyes for blankets and other woven goods.
They gathered pericón, a type of marigold that turned the woolen skeins a buttercream color; jarilla leaves that yielded a fresh green; and tree lichen known as old man’s beard that dyed wool a yellow as pale as straw.
“We’d talk about the stories of the plants,” Gutiérrez, 39, recalled. “Where they grew, the colors that they provide, what’s the perfect timing to collect them.”
Gregarious and possessed of an entrepreneurial spirit, Gutiérrez is descended from a long line of weavers. His father taught him to weave as a child; he even wove the backpack he took to school.
In this small village near Oaxaca, known for its hand-woven rugs, he and his family are among a small group of textile artisans working to preserve the use of plant and insect dyes, techniques that stretch back more than 1,000 years in the indigenous Zapotec tradition.
Textile artists in many countries are increasingly turning to natural dyes, both as an attempt to revive ancient traditions and out of concerns about the environmental and health risks of synthetic dyes.
Natural dyes, though more expensive and harder to use than the chemical dyes that have largely supplanted them, produce more vivid colors and are safer and more environmentally friendly than their synthetic counterparts.
To be sure, natural pigments are not always benign. The plants they are extracted from can be poisonous, and heavy metal salts are often used to fix the colors to the fabric. The dyes fade more quickly from sun exposure than chemically produced colors, arguably rendering the textiles less sustainable.
But environmentalists have long worried about the damaging effects of the wide array of toxic chemicals — from sulfur and formaldehyde, to arsenic, copper, lead and mercury — routinely used in textile production.
Runoff from textile factories pollutes waterways and disrupts ecosystems worldwide. And long-term exposure to synthetic dyes — first discovered in 1856 by an English chemist, William Henry Perkin — has been linked to cancer and other illnesses.
Most of the master weavers in Teotitlán are men. But until the Spanish arrived in the early 1500s, weaving in the village was done by women using back-strap looms, said Norma Schafer, who writes the blog Oaxaca Cultural Navigator and has studied the history of indigenous arts and crafts in the region.
The Spaniards, Schafer said, brought free-standing, frame-pedal looms and used them to reward villages that helped fight the Aztecs. Zapotec men in Teotitlán were taught how to use the devices.
Woven blankets and wraps eventually became the village’s main source of income. But it was Americans, traveling through the Oaxaca valley in the 1970s, who saw an opportunity to market the Teotitlán weavers’ colorful hand-woven throw rugs.
“They brought Navajo designs to the village,” Schafer said. “These then were sold at a lower cost to people decorating their houses in the Southwestern style.”
Increased demand led to higher production, with wholesalers distributing rug patterns and paying village weavers by the piece for rugs. Today, about 75 percent of Teotitlán’s population of 5,600 is involved in some aspect of weaving.
“Every family has their own recipe, and every family does their dye process differently,” Schafer said.
The majority of those rugs are made using chemical dyes. By the time Gutiérrez was born in 1978, the ninth of 11 children, his family was using natural dyes only for personal items, such as blankets.
At 18, he left the village for the United States, working first in a fast-food restaurant and later as a manager of a concrete plant in Ventura, California. It was 10 years before he returned to Teotitlán to visit his family.
Thoroughly Americanized by that time, “it was a huge culture shock,” he recalled.
Leaning on the family loom while his father worked, he listened to stories about what life had been like in the village and how it had changed. Eventually he rediscovered a passion for weaving. And he realized that, just as he had forgotten the richness of his culture, the village, too, was slowly losing its age-old traditions.
“There was not much soul anymore,” he said. “These natural dyes were absolutely on the brink of extinction.”
Gutiérrez and his family decided to create their own weaving studio to create pieces using only natural dyes and to teach others how to do it.
His sister, Juana Gutiérrez Contreras, serves as dye master, combining seven or eight natural elements to produce more than 40 colors. Contreras’s husband, Antonio Lazo Hernandez, is also a master weaver and helps develop the textile designs.
Potassium alum, or potash, a mineral found in the mountains around Oaxaca, is used as a mordant, holding the dye to the yarn. In addition to plants gathered in the mountains, flora common in local gardens — zapote negro, marush and pomegranate, for example — are also used as sources for dye.
The indigo and cochineal pigments, however, are purchased from elsewhere. The añil plant grows primarily in the southern part of the state of Oaxaca. As for cochineal — a dye that colored the red coats of British soldiers — tens of thousands of dried insects are needed to produce just 1 pound of dye.
So the studio buys the pigment from families who farm the prickly pear cactuses that host the parasitic insects. Only females produce the carminic acid that is responsible for the intense red coloring.
The dye is so harmless that the family uses it to water the garden, while the remaining plant material serves as mulch.
In Teotitlán, Gutiérrez is not the only artisan concerned with preserving Zapotec weaving traditions. Perhaps a dozen others in the village use natural dyes exclusively, and some train tourists in the techniques.
But Gutiérrez’s fluency in English and familiarity with the United States — he still lives much of the time in Ventura — have given him an opportunity to reach a wider audience.