No wonder sunflowers are symbols of happiness and optimism with their cheery, yellow blooms.
 
     Pollinators love them, too. The Thin-leaved Sunflower, and others in the genus, are larval hosts to the Silvery Checkerspot and Painted Lady butterflies.
 
     The leaves on Thin-leaved Sunflower are exceptionally long and slender.  Pruning in spring encourages stronger stems and denser growth.