A set of desktop wallpapers of sunflower pictures under the sun is shared with everyone. Wallpaper size: 3840x2160. Sunflower is a plant of the order Platycodonales, Asteraceae, and Helianthus genus.It is named because the inflorescences rotate with the sun.Annual herb, 1-3.5 meters high, up to 9 meters high.The stem is upright, round and angular, hard and covered with white coarse hairs.