al-fisfisa

Arabic al-fisfisa was the name for the Persian plant aspast (Medicago sativa), the nitrogen-fixing legume that Persians had been cultivating as livestock feed since at least 700 BCE. The word traveled with the plant: Persia to Arabia, Arabia to North Africa, North Africa to Moorish Spain, Moorish Spain to the Spanish New World colonies, Spanish colonies to North America. At each stop the plant was received as a revelation — it could grow in poor soil, fix atmospheric nitrogen, and produce high-protein forage.

The Moors introduced alfalfa into Iberia during the 8th century CE. The Spanish adapted the Arabic al-fisfisa as alfalfa. Spanish colonizers brought it to Peru in the 1530s, where it rapidly displaced local forages. From Peru it spread north through Spanish colonial agriculture. It arrived in California by the 1850s, brought by Chilean miners during the Gold Rush.

The Central Valley of California became the center of American alfalfa production. By the late 19th century, alfalfa was the foundational forage crop of western American ranching and dairy farming. Its ability to fix nitrogen — converting atmospheric nitrogen into soil compounds available to other plants — made it invaluable for rotating with cereal crops.

Today alfalfa is grown on approximately 30 million acres in the United States alone. It is the fourth most cultivated crop in the country. The word al-fisfisa, from a Persian plant name filtered through Arabic, is embedded in the infrastructure of American agriculture.