Zia farming produced a wide array of crops, but the most important of these were corn, beans, and squash, nicknamed the "three sisters". These crops were planted in shared or common ground, to which everyone contributed. They were the staple of Zia and Pueblo diets. Corn was the most important of all. While some was eaten fresh, most was stored away in pots and cellars for the winter and droughts. When some of the corn dried, it was turned into flour and bread by the women. They sat outside at grinding stones, singing religious songs while rubbing stones against the corn, producing flour. They sang, because they considered the corn to be sacred.