Clump of Black-eyed Susans.
Close-up of the cheery Coneflower.
Also known as "Black-eyed Susan" this daisy-like plant has lovely bright yellow petals around a dark velvety brown center. It has a very long bloom period, from July to October, and is great as cut flowers, too. It can grow to 60" so it's a good plant for the back of the flower garden.
. (Perennial)