This is mexican sunflower.  It's an annual.  I have a posting (earlier in this blog) about this plant, but this is such a beautiful photo I had to show.

You can start Mexican sunflower from seed (indoors) about March first for a 

end of April planting.  Starting any earlier will result in very leggy plants that will flop over and

won't transplant into the garden bed very well. (if at all)

(just in case you can't click on photo to go to source this photo is from lovliegreenie tumblr)