Tule is processed in two different varieties: the water kind, brought from the Pacific coast, and the dark one used for making "petates" (floor mats).
In 1771, a letter from Pedro Cortés y Larraz, archbishop of the Guatemalan diocese, Nahuizalco is named as the head of the parish of "Nahuisalco".
The parish joined three churches, namely Santa Catharina Masahuat, San Pedro Putxla, and Santo Domingo Huitzampam, and had a herd of cattle.
The people of Nahuizalco were known for the large support that they offered to the campaigns of Francisco Morazán during the years of the Federal Republic of Central America.
[1] Recognition initiatives formed by the indigenous peoples, who fought for official status led to the city government of Nahuizalco drafting a municipal ordinance called the Rights of the Established Indigenous Communities in the Municipality of Nahuizalco (published in the official journal on July 6, 2011, Núm.126 Tomo 392).