I'll have to say that my Salvia `Maraschino' blooms all summer and is still in full flower. Love it. Also the Salvia greigii `Wild Thing,' which is still blooming away and which I'm collecting seeds from. Also Gaillardia `Goblin' is still going strong. The Rudbeckias don't bloom constantly but will rebloom if I'm vigilant about deadheading, although they don't come back as strong as the original blooms. My Caryopteris blooms constantly until frost, once it starts blooming, and this year it started in early July. I love it almost as much as the bees and butterflies!
