What does grass need?

Grass needs sunlight so it can stay warm. If the grass stays warm, it will grow. For example, if you ate cold food all the time, you would get sick, which is why we always eat warm or hot food. From, Kendall Sellinger, age 11 ....... Grass needs sunlight for photosynthesis, the process where leaves convert solar energy and water into the carbohydrates for its growth.