As late summer is turning into fall, many of us are spending less time cutting the grass. In fact, as the weather turns cooler up North, we start thinking about raking leaves and putting lawn mowers and weed trimmers away for the season. It's no coincidence that the same change in seasons cools down concrete temperatures in the field, slowing down the rate of slump loss, extending the time of setting, and complicating the relationship between the strength of the concrete in the structure and the strength indicated by standard lab-cured cylinders. By taking a closer look at how temperature affects natural growth processes of plants like turf grass, we can gain some interesting insight about how temperature affects concrete.