I love the reds, oranges, pinks, and whites of many great sun gardens. There’s something about cool blues, greens, and lavenders, though, that just seems to explode in a bright, hot summer garden. Cool colors draw the eye and add fantastic contrast, especially in hotter areas. They have a pleasant calming effect, and they very often shimmer beautifully in the low light of a summer evening, be it moon or fire.
For brilliant blues that stand up to serious heat, you can’t beat Pincushion Flower Fama Deep Blue. It’s a heavy bloomer with large, bright blue flowers that make long-lasting cuts. It grows well in full sun, and thrives all summer, even into zone 9.