My favorite plant today is Verbena bonariensis a self-sowing annual for sun with a long bloom season.
Self-sowing means that if you let the seed pods stay on the plant they will be dispersed in your garden and you can have this wonderful plant popping up year after year. If you don’t like the serendipity of plants appearing in your garden simply deadhead it as it sets seed.
A look alike to Spring flowering Alliums Verbena bonariensis adds that same circular shape to the garden all Summer long. The purple flowers on wiry stems attract bees and butterflies.