When was wild grain collected and eaten?

Wild grain was collected and eaten by humans as early as 20,000 to 30,000 years ago, during the Paleolithic era. Archaeological evidence suggests that hunter-gatherer societies relied on wild cereals, such as barley and wheat, before the advent of agriculture around 10,000 to 12,000 years ago. This early foraging played a crucial role in the eventual domestication of grains, leading to the development of farming and settled societies.