Common Sunflower

Common Sunflower
Helianthus annuus

The Common Sunflower is an interesting plant. It is thought to be native to the western U.S., but has been cultivated by the American Indians and is now ubiquitous all across the U.S. and does escape although doesn't seem to persist in the wilds of northeast Indiana.

So, it's sort of a native, but unknown exactly where and how long. It's easy to distinguish from other sunflowers by its large, heart-shaped leaves.