One of my favorites is Closed Bottle Gentian, Gentiana andrewsii. This beauty has blossoms that are always closed, making it look like it is perpetually in bud. Pollinated by bumblebees, one was caught in the act.
Blue Mistflower, Conoclinium coelestinum, for some reason reminds me of cotton candy. Its delicate feathery flowers are a lovely shade of periwinkle.
Great Blue Lobelia, Lobelia siphilitica, is a relative to the lovely cardinal flower. One of my friends was lucky enough to witness a Giant Swallowtail butterfly nectaring on it.
So, how could one stay blue seeing all the beautiful flowers that are out and about? Go outside and enjoy this awesome weather!