There is a field near our house that I often walk by. When I first moved here, the field had been ploughed, and I wondered what the crop might be. Now it is clearly a field of wheat. As I recently strolled along the edge of the field, it was interesting to see how the middle of the crop was turning golden while sections along the edge or near some of the vehicle tracks were still green. I imagine that they will soon be turning golden too but something about their location had delayed them compared to everything else.