To see the grain in a dream is a sign of richness, wealthy lifestyle and joy. The dream shows that you are getting everything you want and even more. Alternatively, the dream about grains could show poor and unhappy life, depending on your being in waking life. The grains could also symbolize the begging of something big. Consider that grains could also remind for some people that its already the time to become parents.
Read more about dreaming of Grain in other dream meanings interpretations.