The sunflower plant grows in the sunny season, and it requires direct sunlight. These plants grow at high temperatures. Due to more sunlight, there is more evaporation of water. So, these plants consume a lot of water during the growing and flowering season. They bloom only in the sunny season because these are long day plants. The absorbed water is lost through evaporation and only a small quantity is present for plant use. So, it takes more and more water to grow and reduce the risk of drying up due to evaporation.