Spanish conquistadors didn’t just destroy the Aztec Empire—they wiped out a plant that could have fed starving Europe.
🩸 When Franciscan monk Bernardino de Sahagún first witnessed the Huey Tecuilhuitl ceremony in 1529, he couldn’t believe his eyes: Aztec priests kneaded flour from tiny golden grains with human blood, molded it into a two-meter-tall figure of a god, baked it, then broke it apart and distributed the pieces to thousands of worshippers. The Spanish called it a blasphemous parody of the Eucharist—communion with the body of Christ. The plant used to make the sacred dough tzoalli earned the name "devil’s grain"—huauhtli, or amaranth.
⚔️ Viceroy of New Spain Antonio de Mendoza issued a series of decrees in the 1540s banning amaranth cultivation under penalty of death by hanging. Spanish soldiers methodically burned fields, uprooted plants, and chopped off the hands of peasants caught with grain reserves. By 1577, amaranth had virtually disappeared from Mesoamerican fields—a crop the Aztecs had cultivated for 6,000 years, erased in three decades. The irony? The Spanish didn’t destroy a narcotic or poisonous plant, but a pseudocereal with a protein content of 13-18%—higher than wheat (10-14%) and corn (9%).
🔬 Amaranth isn’t a true cereal in the botanical sense, but a member of the amaranth family, a relative of beets and spinach. Its grains, the size of poppy seeds (1-1.5 mm), contain a complete set of essential amino acids, including lysine—the very molecule whose deficiency makes corn and wheat diets incomplete. The Aztecs intuitively created the perfect food system: corn provided carbohydrates and energy, beans fixed nitrogen in the soil, and amaranth filled the protein gap. The Spanish destroyed this three-legged stool, leaving only corn and beans.
🌾 The plant grows up to 2-2.5 meters tall, shooting out panicles up to 90 cm long, covered in 50,000-60,000 microscopic flowers. A single plant yields up to 500 grams of grain—productivity of 2-3 tons per hectare, comparable to wheat, but amaranth grows at elevations up to 3,500 meters, tolerates drought, requires no irrigation, and continues photosynthesis at temperatures up to +40°C. Its root system extends 1.5-2 meters deep, tapping water where wheat would have withered. The Aztecs collected 20,000 tons of amaranth annually as tribute—9 provinces of the empire paid their dues in this grain, not corn or cacao.
🧬 Amaranth protein contains 6-9% lysine compared to 2-3% in wheat—meaning 100 grams of amaranth porridge covers 70% of an adult’s daily requirement for this amino acid. The grain contains 5-9% fat, rich in squalene—a hydrocarbon usually extracted from shark liver and used in cosmetics and pharmaceuticals. Calcium content: 159 mg per 100 g of grain, three times higher than in wheat. The Spanish destroyed a plant that could have prevented rickets and scurvy in 16th-17th century Europe, when famine killed millions.
⚗️ The Aztecs used amaranth not just in rituals: they cooked porridge atole from the grain, baked flatbreads, and mixed it with honey to make alegría—a sweet the Spanish compared to marzipan. The plant’s leaves, containing 3-4% protein, were eaten like spinach. But it was the ritual use—creating edible idols tzoalli—that signed amaranth’s death warrant. Spanish priests saw not agronomy, but a theological threat: the natives literally consumed their gods, and it resembled Catholic communion too closely to be a coincidence.
📉 While the Spanish burned amaranth fields in Mexico, Europe suffered a series of catastrophic crop failures. 1540-1541—the Great Drought, destroying wheat harvests from Spain to Poland. 1570s—the Little Ice Age entered its active phase, temperatures dropped, the growing season shortened. 1590s—mass famine in Spain, France, Italy. Amaranth, capable of growing at +15°C and maturing in 90-120 days, could have been the salvation—but its seeds lay in the ashes of Mexican fields.
🌍 The Spanish brought corn, potatoes, tomatoes, and cacao to Europe—but not amaranth. The reason wasn’t agronomic, but ideological: the plant was too closely tied to "pagan abominations." The Inquisition ensured the seeds never reached the Old World. A few ornamental amaranth species made it into European gardens as Amaranthus caudatus—"love-lies-bleeding"—but they were grown for their red panicles, not grain. The edible species—Amaranthus cruentus and Amaranthus hypochondriacus—remained in Mexico, cultivated in secret in mountain villages, at the risk of death.
⚖️ The paradox? The Spanish aggressively introduced wheat to the New World, trying to replace "barbaric" crops with "civilized" grain. But wheat grew poorly in the tropical climate, required irrigation, and was plagued by rust and smut. Yields were 0.5-0.8 tons per hectare compared to amaranth’s 2-3 tons. The natives starved on the imposed wheat diet, while their own crop, perfectly adapted to local conditions, was outlawed. By 1650, the population of Mesoamerica had shrunk from 25 million to 1 million—epidemics, wars, and famine worked in synergy.
🕳️ Amaranth didn’t disappear completely—it survived in the mountainous regions of Mexico, Guatemala, and Peru, where Spanish control was weaker. Indigenous communities passed seeds from generation to generation, growing the plant on tiny plots hidden from authorities. In the 18th-19th centuries, botanists occasionally mentioned amaranth in scientific works, but as an exotic rarity, not an agricultural crop. The plant remained an ethnobotanical curiosity—something the Aztecs once ate, but of no practical interest.
🚀 The turning point came in the 1970s, when NASA began searching for crops to grow in space and on future Martian bases. The requirements were strict: high nutritional density, rapid growth, stress resistance, minimal water needs, edibility of all plant parts. Amaranth passed all tests. Agronomist John Robbins of the University of Pennsylvania published a 1979 paper calling amaranth "the Aztecs’ forgotten superfood" and proposed reintroducing it to global agriculture.
📊 In the 1980s, field trials began in the U.S., China, India, and Kenya. It turned out amaranth wasn’t just nutritious, but agronomically advantageous: it suppressed weeds with its rapid growth, enriched soil with nitrogen, and required no pesticides—insects barely touched it. In China, by 1990, 150,000 hectares were planted with amaranth, mostly in arid northern provinces. In India, the plant was grown in water-scarce states like Rajasthan and Gujarat. But global production remained microscopic: 50-70,000 tons per year compared to 750 million tons of wheat.
📌 Today, amaranth is grown in 50 countries, but its share of global grain production doesn’t exceed 0.01%. The largest producer is China (30,000 tons per year), followed by India, Peru, and the U.S. In Mexico, the plant’s birthplace, production is just 5,000 tons—less than 450 years ago. It’s sold as a superfood in health food stores for $8-12 per kilogram, 10-15 times more expensive than wheat. The paradox: a crop that could feed billions remains a niche product for affluent consumers.
🌱 In 2015, NASA included amaranth in its list of 18 crops for cultivation on the International Space Station. In 2019, China’s lunar lander Chang’e-4 delivered a container with amaranth seeds to the far side of the Moon—they sprouted but died after 9 days due to the lunar night. In 2023, the California startup Interstellar Lab began growing amaranth in biomes simulating Martian conditions—low pressure, high CO₂, limited water. The plant showed a yield of 1.8 kg per square meter in 100 days, making it a leader for off-world agriculture.
🔄 In Mexico, a slow revival is underway: the government subsidizes farmers returning to amaranth, especially in the states of Puebla and Tlaxcala. Production of alegría—that same Aztec sweet made from amaranth and honey—has become a tourist attraction. But the scale is incomparable to pre-colonial times: 20,000 tons of Aztec tribute versus 5,000 tons of modern production. A plant that once fed an empire now feeds tourists. Four and a half centuries of religious prohibition proved stronger than agronomic logic—amaranth returned not through fields, but through space programs and organic food stores.