Turks cap!
It's a pretty shrub with reddish flowers, always in bloom. The flowers taste like watermellon. It dies back in the winter, so you cut them down to the ground once they die with the first frost, but they bounce back every year. You can also eat the seed pods.
One of my neighbors walking his dog gave me the stink-eye as he observed me picking and eating a few of these off of my plant. He probably though I was weird, but who in the heck cares.