the heart of sunflower

tiltedsunflowers campanulaceae inflorescence heartshaped centimeters pollinating consumption alternative sunflowers scientific helianthus asteraceae herbaceous unbranched serrations ornamental wildflower sunflower alternate gradually extremely including processed vegetable rotating branched diameter attracts covered pointed growing collect species sources produce annuus plants family annual sturdy meters coarse leaves margin stalks branch nectar pollen edible animal yellow flower heart order genus named plant thick upper white hairs ovate shape acute basal