Rudbeckia or cone flowers come in all variations of yellow.red/orange/gold, as well as annuals, biennials, and perennials. They are a joy to grow and easy as pie. They look best in a mass planting, but I have a few spread hither and yon about my entire yard and flower beds. I even scattered some seed along the roadside and they bloomed this year also.

 The larger yellow flower near the top is an evening primrose.

I had a glorious crop of these around this stump last year and they reseeded and are back this year.
Rudbeckia are commonly called cone flowers or black-eyed-susans.