Slim and upright, these perennials (also known as Montbretia) bloom in mid-summer till mid-fall in hot shades of red, orange, and yellows, says Montgomery. "These beauties attract hummingbirds and butterflies, but deer and rabbits don't care for them," she says. "They make excellent cut flowers, and they naturalize easily. They are also excellent planted in containers with annuals in similar hues to add a bright pop of color and surprise in mid-summer."