This is Helianthus annuus, also known as Common sunflower. This is the state flower of Kansas. Grown mainly for its edible oils and fruits, this plant is also used in bird feed and livestock forage. Helianthus annuus is a larval host for the Gorgone Checkerspot, Oblique-striped Emerald Moth, Bordered Patch, and Silvery Checkerspot. Common sunflower is grown as an annual all over and it is a short lived perennial in USDA Hardiness Zones 6 to 9.