Sunflower is a tufted evergreen shrub of Palmae and Sunflower. Sexual preference is warm, humid, semi-cloudy and well ventilated environment, and the lowest temperature in winter should be above 10℃. During the growing season, the humidity of the soil in the pot and the air around the plants must be kept moist; Sunflowers are afraid of cold and have weak cold tolerance. Generally, it is cultivated outdoors in northern China from late September to early October of 10, so it must be placed in a sunny place. During the wintering period, the indoor temperature is 23-25℃ during the day and above 15℃ at night, otherwise it will freeze to death in winter and spring. During the wintering period, we should also pay attention to scrubbing the leaves frequently or spraying a small amount of water on them to keep them clean.