The sunflower leaf is typically large, broad, and heart-shaped (cordate), providing a massive surface area to maximize sunlight absorption. It is a deep, matte green and feels remarkably coarse to the touch, almost like sandpaper, due to a dense covering of tiny, bristly hairs. The leaf is structured around a wide blade and a distinct system of veins that provide structural support across its expanse. Its edges are prominently serrated, giving the perimeter a jagged, tooth-like appearance. These leaves are usually attached to the main stalk by long, sturdy petioles, often arranged in an alternating pattern as they climb the height of the plant.