During the Pueblo I period, people relied more and more on farming to feed a growing population. In years when they had a good harvest, they could dry and store extra food for years when the harvest was poor.

Corn and beans were the most important foods during the Pueblo I period. People also continued to grow squash.

People during the Pueblo I period continued to hunt wild animals and gather wild plants. Archaeologists have found evidence that people hunted so many animals and gathered so many plants that these wild resources became scarce. This was especially true around the large villages.