I just planted some 2 years ago and had to move it because it was doing so poorly!(so will see this year if it takes off) My yard was a barren wasteland when we moved in 3 1/2 years ago, I'll be happy with anything growing(ok, maybe not anything)
I loved this article! Coreopsis was my first real success at my old plot. I had one sunny border near the driveway, so I took some free seeds forma local wildflower festival and I just let it take over and threw in some red salvia and some sort of blue salvia around the edges and let it go. It was a traffic stopper all summer.
I have a lot more sun now and am starting an 80 foot border so I've actually started some Early Sunrise from seeds and am turning it loose! Hopefully some of my other stuff will get a good enough head start to stay alive, if not oh well, LOL I'll take a bright orange mass compared to wilting ne'er do wells any day.