Studying MU 125 archaeological site in northern Arizona dating from 1070-1090, Berkebile has focused her work on identifying ancient plant remains inside soil samples excavated from the site. What she has found are bits of other plant life the Anasazi might have used a food sources including purslane, pinyon nut, juniper berries, globemallow and even cactus. This would be quite reasonable as the arid land conditions and the seasonal climate shifting between periods of drought and frost would have been challenging if maize was the only main food staple.
* Cultivated wild resources: hardy plants, easy to grow and native to the region before the introduction of maize e.g. purslane, globemallow and chenopodium.
* Gathered wild resources: plants native to the region before the introduction of maize but gathered from the wild, not cultivated e.g. pinyon nut, juniper berries and cactus.
* Plants imported to the regions including maize and possibly bean varieties
Berkebile's research breaks new ground in understanding how native Americans used native and wild resources.
For more see: Research examines ancient Puebloans and the myth of maize, Science Daily, 2 April 2013